Discussion Questions Essay Example | Topics and Well Written Essays - 500 words - 38

Discussion Questions - Essay Example I prefer Theory Y as an employee and as a manager. Self-motivated employees are beneficial for the organization. Employees gain success through hard-work and doing their work right. They can also prove their work through constant enthusiasm, taking on new ventures, and bringing in creative work processes. In my work, I have gained excellence through constant hard-work and introducing creative work, breaking the old chain and trying to make it as new as the time. I admire my team leader who is authoritative, creative yet open to new changes. He does not believe that he is the boss of all and at the same time he does not take credit for other’s work; he ensures that all his employees are rewarded accordingly. A group is a number of things and persons who have some relationship to one another; it is a subset of a culture or a society. A team is any group of people involved in the same activity, especially referring to work (Boundless, 2014). A team is a subset of group; a team tends to be closer and work together and holds stronger sense of collective identity. High performance team is one which delivers results. I have been a part of the team that introduces credit lines to the microfinance industry. The team work had paid off due because of the contribution of expert advice from each group member. If my team is having difficulty in taking a decision, I would sit with the team members and discuss the reason for this difficulty and the possibility of arriving at a decision. All humans are different and need to be communicated to differently; that is why a decision well understood by one person does not mean that it is understood by all other employees as well. I have dealt with clients from different countries including Bangladesh, India, and Turkey. I have always dealt with the companies differently, because same decisions have to be communicated separately to different companies. I took into account the cultural and ethical aspects of

Describe and evaluate the main macroeconomic policies used by the Essay - 3

Describe and evaluate the main macroeconomic policies used by the Government and Central Bank of Brazil over the last two years - Essay Example een undergoing a phase of sharp economic slowdown as inflation in the country has continued to slide up the scale to touch its highest level in the decade, with 12 month rolling inflation index (ICPA) clocking in at 7.70%, significantly above the country’s Central Bank target of 6.5%. It must be noticed that this is the highest inflation rate prevailing in the country even since May 2005, when the rates touched 8.05%. Brazil’s Central Bank plays with the policy of interest rate of the country in a bid to control the inflation in the country, as well as regularize the country’s currency (Media, 2015). Just recently Brazil’s Central Bank raised its interest rates for the third time in a row to touch the 12.75% level. The main motive behind the increase in the country’s discount rate was to control the rising inflation engulfing the economic spheres of the country, along with being in line with the monetary tightening stance taken by the Central Bank. A look further into the past tells us that in line with the slowdown being witnessed in the Brazilian economy, the Central Bank had cut its growth prediction for the country by a phenomenal 90 basis points to 0.7%. Essential to notice here is the fact that such low growth figures are below are generally below what other Latin American economies have forecasted, with the exception of Argentina and Venezuela. Taxation has also been a key cause of concern in the Brazilian economy. Within the time span of the last two years the government had given incentives to many industries to stimulate demand, for instance by giving tax breaks to the auto sector. However, knowing where Brazil currently stands at the moment, the current Government will have to take some non-populist measures including abandoning the incentives provided to various industries. The last two years have also seen changes in the country’s investment environment despite various efforts taken by the government and the Central Bank to control the

ABC Company Management Research Paper Example | Topics and Well Written Essays - 750 words

ABC Company Management - Research Paper Example The decision is of great importance for the organization because the results of the decision continue for many years hence such decision affect the profitability of a firm. Large amounts of money are invested in capital projects, the resources that are invested in a project are often committed for a long period of time and it may be difficult to reverse the effects of a poor decision. In view of the above, the viability of this new product line should be made based on the time needed to commit to the project, the expenses associated with the project , source of funds to finance the project ,level of return of new product and the additional revenue expected from the project. I. Regulatory and compliance risk-this is the risk of regulatory sanctions that arises when Company fail to follow the code of conduct as outlined by the rule of law in the course of carrying out its activities. It includes failing to abide by laws regarding conservation of environment, health standards of its wor kers and quality standard s set for their products. This risk has disastrous impact on company’s existence as it may cause the company to be winded up if it fails to comply. Consumer demand shifts This is the risk associated with continued change in consumer preferences and tastes. This is brought about by changes in needs and fashion .a Company therefore should always be in line with this shifts so as to produce products that suit consumers needs Uncertainty Most business firms fear the challenges that may face the organization in the future. The uncertainty in credit market, coupled with new laws and the fluctuations in the global economy influences investment decisions. Thus most firms shy away from long term commitment of funds to long term projects in favor of short term projects with uncertainty being their major excuse. This problem of uncertainty can however be solved by making long term strategic planning. Globalization This is a major challenge to firms today. Firms need to understand foreign cultures so as to penetrate new markets with their products and services. Also firms face stiff competition from competitors who unknown to them are in foreign markets as a result of increased globalization. The challenge therefore can be solved by in depth understanding of international markets and diverse foreign cultures through better research of information for better analysis. Technology The technological advancement is running at an increasing rate. Some competitors use this as a tool to outdo their competitors that is they wait for next generation of technology which may be a half a year away then use it to gain a competitive edge over other firms. Hence firms need to come up with a reliable long term technology plan and also remain flexible to use to their advantage any unforeseen technology development. II. ABC COMPANY CASHFLOW STATEMENT FOR THE YEAR ENDED 31 JUNE 20XX $ $ Cash flow from operating activities: Cash receipts from customers 10000 C ash paid to suppliers and employees (3000) 7000 Cash generated from activities Interest paid 200 Income taxes paid 500 (700) Net cash flow from operating activities 6300 Cash flow from investing activities: Purchase of property, plant and equipment ( 300) Proceeds from disposal of land (200) Purchase of equity investment ( 700) Interest received 300 Dividend received 200 (700) Net cash flow from operating activities 5600 Cash flow from financing activities: Proceeds from issue of share capital 4000 Proceeds from sale of long-term loans 300 Redemption of preference shares ( 210) Repayment of long-term loans ( 200) Dividend paid (130) 3760 net cash flow from financing activities 9360 Net increase in cash and cash equivalents 340 Cash and cash equiv

PDCA project Assignment Example | Topics and Well Written Essays - 1250 words

PDCA project - Assignment Example Therefore, I intend to improve my non-verbal communication skills, thus become a better leader in my profession, as well as my social life. My main aim of choosing to improve this skill relates to its ability to help me build better relationships with my peers, subordinates, the patients I serve, and other stakeholders. I followed the Plan-Do-Check-Act (PDCA) cycle to aid me in achieving my personal quality improvement goal. This involved formulating a plan of action to guide me on what I should do. I then implemented the plan, and collected data on the progress of the plan. Collecting the data enabled me to evaluate the success of my plan, hence determined the effectiveness of the plan, or need for modification (Neuhauser, Myhre, & Alemi, 2004). I intended to improve my non-verbal skills through improvement in my listening skills. This involved active listening, which meant giving my seniors, juniors, and other subordinates enough time for self-expression. This involved working on maintaining eye contact with whom I engaged. In addition, I had to work at complementing or contradicting their messages through such acts as nodding, and rolling eyes respectively (Videbeck, 2011). I was also to display acceptance through my posture whenever possible. This meant sitting beside, or across the people I interacted with, instead of behind them, which creates a physical barrier. I also planned to employ appropriate vocal cues, and avoid high pitches, which hinder effective communication. I hoped to treat at least 80% of the people I interacted with in this manner. This measure helped me to gauge my ability to communicate non-verbally, thus measure the effectiveness of my communication skills. The plan was undertaken for four consecutive weeks. During this time, the number of times that I failed to adhere to my plan were recorded on a daily basis in a daily recording sheet. The plan commenced on the 4th

Inovation In Tourism In Response To Global Concerns Essay

Inovation In Tourism In Response To Global Concerns - Essay Example Natural resources such as water are being strained by the need to use the resources to generate energy for use in the tourism areas. Forests are being torn down to pave the way for the construction of hotels and resorts to be used by tourists, hence devastating entire landscapes. Political instability in a country or adverse natural disasters such as floods, famine and tsunami are also seen to adversely affect the global tourism industry (Conrady, Buck, Viehl, & Tittel, 2011, p. 157). The effects of political instability were clearly seen in Russia in 1991 when the country’s tourism declined by approximately 10 times as a result of the cessation of subsidies given to the industry by the union (Renard et al., 1997, p. 138). â€Å"In some countries, the industry is experiencing a huge backlash as a result of the repercussions of the global economic slowdown that affected the entire world. Some major markets such as Greece and Spain are still suffering from the 2009 global slowdown. The backlash was more pronounced in countries that rely on mainly Europe and America as their main traditional markets as these were the hardest hit by the recession† (African Development Bank, 2009, p. 437). The recent terrorism activities have caused heightened security and safety concerns in the tourism industry. A reduction in tourism spending within a country due to security concerns generally leads to weakened local economies which might have the effect of placing the affected government under a lot of stress. This can have the effect of causing the country to experience general destabilization throughout all its sectors and, hence, help in the attainment of terrorism’s main agenda of destabilization (Henderson, 2012). The increased fuel costs have caused the cost of travel to greatly increase to levels where most ordinary people are

Sequences of Development Essay Example for Free

Sequences of Development Essay The explanation of the sequence and rate of aspect of development from birth to 19 years. Ans. Following the timeline given the below illustrates these sequence of development from birth : 0-6 months – At this stage, the baby has just come out of the womb. There is a huge reliance on the environment and the mother for the survival of the baby. The baby is learning aspects of movement and coordination. He/she is grasping more awareness of surroundings. Food and warmth is exclusively supplied by the mother. 6-9months – The awareness of him/her to the environment becomes sharper. The muscle coordination and movements of the baby become more definite. The baby becomes more â€Å"free† with the environment and interactive. At this stage the young tot can crawl and sit up confidently. 9-12 months – Judging by the baby’s growth, (physically and mentally), It can be said that he/she is moving into the â€Å"toddlers stage†. Here he/she is taking some steps gradually. This stage is quite important in infancy as the muscular development is getting quite advanced. The child is aware of other children around him/her and is interacting with them. 2-24 Months – A lot of more definite changes are happening in the child’s life at this stage. He/She is moving into a greater deal of psychological development. Also, the mental development at this stage is getting quite advanced. The child is learning how to be more reliant on his/her own judgements and interestingly, a lot of changes in behavior can be seen at this stage. The child i s much more aware about the environment and can choose options on what to play with, how to play e. t. c. He/she becomes more responsive to education as the brain is much more advanced at this stage and actually â€Å" is eager to learn educational stuff†. The stage is vital in getting a child educationally involved as he/she is â€Å"ready to take on† so to say. 2-3 Years A behavioural pattern emerges here. The child suddenly starts to become a bit resolute and wants to have his/her own way. There is a certain amount of self dependency that is seen here and not seen in earlier stages. It might give his/her parents a fright and they can start to think if there is something wrong with the child. The brain is getting much more developed and the child is eager to learn. There are definite physical changes as well. The body becomes less susceptible to easy injury as the child’s skin toughens. He/she also becomes more immune to infection. 3-5 Years – The child is thinking like a â€Å"mini adult†. There is more confidence in speech. More assertion in expressing self. The child is looking more at the â€Å"behavioural pattern† of his/her parents and other people he/she is in care with. This is one of the most if not, the most important stages in the childs growth pattern as this is where the â€Å" Character forming† element can begin and will definitely form the rest of the child’s life. The main concentration on children at this stage must definitely be a form of positive character development and essence on positive thinking and acting. The child will grown from this stage into more adult ways of thinking and positive self reliance will result. For instance, some children may start to learn how cook and feed themselves even at this stage!! As the physical out look of the child takes on a more mature form, the child’s identity starts to express itself and in a psychological and social sense, the child takes on his/her awareness of self. 5-8 years The child is taking on more responsibility and is seeing him or her self as â€Å"part of the world â€Å" so to speak. The environment takes on a different dimension with him or her and a lot more emphasis is given to friendships and what they mean. The behavioural pattern in the child at this stage is formed for life. The child is having his or her own identity and is willing to share it with the world. An opinion of things start to take form in his or her own mind and as a consequence, certain forms of behaviour emege. It is important to note that at this stage of the child’s development, he or she is directly influenced by what mum or dad says and can be heavily affected by what is said to him or her. This is the stage where abuse can be much more destructive. As he or she may form opinions and be influenced by them easily, life’s truths and hardships will need to be passed down in a very â€Å"gentle† manner to him or her so there is understanding that these steps are taken for the child’s own good. 9-11 Years – The difference between boys and girls between them individually and to each other start to appear sharper and more permanent. The girl child sees herself as more expressive, will start to â€Å"grow â€Å" (in clear psychological and social terms) more and be more assertive. Despite this show of bravado, there is still a huge reliance on adults especially the parent or guardian. The males in their own case , will take strength from being in packs and express themselves more openly. There is a clear segregation of the different sexes at this stage and probably for the first time, a clear distinction between the physical characteristics of each other start to appear to the male/female child and an hints of an attraction start to emerge although initially very very subtly. Despite all this, the child is still very very dependent on his/her mother indeed. 1-19 Years – These years are more environment dictated to the child’s development than ever before. As the child starts to see more of what adults do (especially in the mid teenage years), he or she copies and will start to act it out. For instance, a boy may start to take interest in adult discussions more than before and will be spending time asking dad and mum certain questions. It is essen tial that parents and guardians spend much more time with their teenage children in understanding†them. This has been a very important aspect that has been lacking in parent/children relationships over the years. As this child in this case grows up into ages 14,15, 16, there is a natural â€Å" I wan to know all† syndrome. The support of the parent in understanding the psyche of their children will greatly influence and help them in the child’s journey to becoming an adult. As this is a very important aspect of his/her life, every support must be given from other adults to let this teenager know that life isn’t that challenging as an adult and welcome him of her into this final stage of development in life as one of them with mistakes to learn from and life to live in. Difference in the â€Å"sequence and the rate of development† The sequence in development in a child show the journey through each stage of development in a child and how this child moves through them. The rate of development highlights the progressive time span the child develops from childhood into teenage years. †¢ An explanation of how children and young people’s development is influe nced by {a} A range of external factors : 1, Socioeconomics – The wealth status of a child’s parents and economic environment will inevitably reflect on the child’s development. Children do depend on food, water, warmth and a suitable environment to move about freely. In some countries in the world, this basic requirement is a tall order and inevitably, the level of development in these kids is adversely affected. The access to quality education could also be impeded hence affecting a child’s intellectual, mental progress in life 2, Nutrition – nothing needs be said much about this factor as it is impossible to child to grow as he or she should without adequate food and water. This is key as food and water do have the biggest role to play at this stage of a child’s life. This is not just about three square meals a day but also a balanced diet which will include Proteins, carbohydrates, mineral salts and vitamins. 3, Family and Society – The major psychological development in a child’s life is fed through his or her family (in this context the father, mother, brothers and sisters and cousins external family). As we learn certain ways of life and conduct from our family members, a child will inevitably, pick up certain forms of habits and behaviour which may or may not be socially favoured. The set of friends a child mixes with can also influence the way he or she sees things hence influences the level of development in his or her psyche. 4, Physical Environment – The environment has a part to pay in physical development and otherwise in a child as there are different elements that makes up an environment for a child. E. g some environments such as war zones may not be the best place to bring up a young child.. There have been very strong images of children in Sierra Leone carrying guns and shooting people at a very tender age. Also, it was reported that a lot of children died in Japan following the second world war due to heavy radiation from the atomic bomb . It is not difficult to see why it is said that a child is the product of his/her environment. (b) A range of personal factors 1, Pregnancy stage : If the child while in the womb has been dosed with cocktails and cocktails of drugs, this will in effect, affect the child long term. The child could develop problems with breathing or even more permanent damage to the blood or other organs in the body. This is found quite common in developed nations especially in the west e. g here in the UK. This will be a debilitating situation to the child in their later life. 2, Health – Health problems can be genetic or caused by environmental factors. If the environment a child is raised up is not conducive, the child can be adversely affected by suffering from different diseases such as Cholera, Measles, Polio and so on. In over crowded and poorly ventilated areas, airborne diseases such as asthma, tuberculosis may spread and affect children more easily. , Physical Disabilities – This applies especially in cases of mental disability e. g downs syndrome, degenerative mascular dystrophy and these can restrict a child from exercising their God given abilities to do certain things and carry out certain tasks. This can also be seen in physically disabled children as they are not able to run and perform certain physical tasks. Their development as individuals is severely affected. â € ¢ How Current Practice is influenced by A) Theories of development There are many theories in which the most important influential factors ffecting the growth of children and young ones are based. For simplicity, they can be put into three broad areas which cover what the earlier child behavioural psychologists and sociologists based their conclusions. In terms of children’s educational needs ( on which this question is based on), there are three main areas to consider : 1, Maturationist Theory : This theory is based on the work carried out by Arnold Gessell. He advocated that the development occurs due to biological factors in predictable, sequential stages over time (Hunt 1969). The general belief by child education specialists is that children will learn automatically and naturally as they grow older (Farquhar and Stein,1993). With this theory comes the preparation of children at certain times for basic education. If a child can recite the alphabet, then they are with time and patience by the parents and guardians due for Schol. It is a very stage related progress. Being ready for nursery school, will be a stage when they can perform well in Arithmetic (sums) and can also display a good grasp of basic word spelling. In the current time, this is a method used or applied by schools for children when they seem to be lagging behind on the average level of learning. (2) Environmentalist Theory : With the environmental influence as stated earlier playing a significant part in the overall growth and development of a child, the educational side is revealed by John Watson and B. F Skinner for example, as a contributory factor. The idea is that children learn a lot from their environment and surroundings and as a result, can pick up â€Å"inspiration† in learning from how they can correlate what they learn with what goes on around them. An example of this is when the child can respond to what is on going in the class room that child has been placed. Learning qualification so to speak is based on what the child can see happening around him or her rather than an actual educational assessment. An example of this is the assessment given to children back in Africa in the 1960/70’s. In order to qualify for Primary School education, the child is asked to place his arm over his head in order to see if the hand can reach the ear lobe on the other side of the head. If the ear lobe is reachable, the child is accepted wether in the real sense of the word of assessment he is qualified or not. Children that suffer from slower learning under this theory are brought to be encouraged to use the environment around them as a teaching tool. (3) Constructivist Theory : The theory relates to the idea that children pick up learning attributes for development faster by interacting with friends and family In other words, the rate of learning is faster if the child can see close family as mum and dad as well as close friends around him or her while study. Theorists such as Jean Piaget and Maria Montessori conclude that the children actually â€Å"initiate† the whole learning process. An example can be seen when a toddler suddenly picks up a plastic bowl toy from the ground and places the lid on top. Parents can encourage their children in story telling activities at home and other activities that encourage reading out letters and counting. In the event of difficulty in learning, the child is given more close assessment and detailed teaching guides are put in place to give the young tot some more rigorous level of coaching.

General Information About Hydrilla And Photosynthesis Biology Essay

General Information About Hydrilla And Photosynthesis Biology Essay All green parts of a plant have chloroplasts in their cells and can carry out photosynthesis. In most plants, however, the leaves have the most chloroplasts (about half a million per square millimeter of leaf surface) and are the major sites of photosynthesis. Their green color is from chlorophyll, a light-absorbing pigment in the chloroplasts that plays a central role in converting solar energy to chemical energy. Pp 109 (Campbell, N.A. et. Al. 2009 Many aquatic weed scientists consider Hydrilla verticillata the most problematic aquatic plant in the United States. This plant, native to Africa, Australia, and parts of Asia, was introduced to Florida in 1960 via the aquarium trade. Hydrilla is now well established throughout water bodies in the southern states where control and management costs millions of dollars each year. From 1980 to 2005, Florida alone spent $174 million on hydrilla control. On the West Coast, California, Washington, and Idaho all have limited populations of hydrilla. Managers in all three states are serious about eradicating these infestations. Washingtons hydrilla infestation, discovered in 1995 in two interconnected lakes in King County, is the only known occurrence of hydrilla in Washington and eradication efforts are ongoing. Hydrilla is also increasingly being discovered in the northern tier states and in the Midwest.    Habitat Hydrilla forms dense mats of vegetation that interfere with recreation and destroy fish and wildlife habitat. Hydrilla has several advantages over other plants. It will grow with less light and is more efficient at taking up nutrients than native species. It also has extremely effective methods of propagation. Besides making seeds (seedlings are actually rarely seen in nature), it can sprout new plants from root fragments or stem fragments containing as few as two whorls of leaves. Recreational users can easily spread these small fragments from water body to water body.    However, hydrillas real secret to success is its ability to produce structures called turions and tubers. (Presence of these structures is also a characteristic that distinguishes this species from similar looking plants.) Turions are compact and produced along the leafy stems. They break free from the parent plant and drift or settle to the lake bottom to start new plants. They are generally about a quarter inch long, dark green, and appear spiny. Tubers are underground and form at the end of roots. They are small, potato-like or pea-like, and are usually white or yellowish. Hydrilla produces an abundance of tubers and turions in the fall and the tubers may remain dormant for several years in the sediment. The hydrilla variety found in Washington will also make tubers in the spring and will produce non-dormant turions throughout the growing season. Tubers and turions can withstand ice cover, drying, herbicides, and ingestion and regurgitation by waterfowl. One square meter of hydril la can produce 5,000 tubers!  Ã‚  Ã‚   There are two varieties of hydrilla in the United States. Many of the plants in the southern United States are all one sex (female) and are dioecious. Dioecious plants cannot produce seed. The plants in Washington are monoecious (having both male and female flowers on the same plant) and can produce seed. In New Zealand, where hydrilla is not native, the hydrilla plants are all male. Generally, the northern-most populations of hydrilla in the United States are monoecious. Although the hydrilla in Idaho is dioecious, all of Idahos dioecious hydrilla populations are associated with warmer geothermal-influenced waters. Monoecious hydrilla looks and grows somewhat differently than dioecious hydrilla. It tends to have a delicate appearance and sprawls along the lake bottom. The tubers from these monoecious plants are smaller than tubers produced by their southern female relatives. Management Hydrilla is a federally listed noxious weed, listed as a Class A weed on Washingtons Noxious Weed List, and is on the Washington State Department of Agricultures Quarantine list. Weed scientists suspect that some of the hydrilla infestations in California resulted from hydrilla tubers hitch hiking on mail order water lily rhizomes. Plant managers also speculate that Washingtons only hydrilla infestation in Pipe and Lucerne Lakes near Seattle also resulted from contaminated water lilies. Non-native water lilies were once common in these two lakes (before lake managers started herbicide treatments for hydrilla). Since the hydrilla discovery in 1995 in Pipe and Lucerne Lakes, there have been no other reports of hydrilla in Washington. State and local governments (King County and the cities of Covington and Maple Valley) are working together to eradicate the hydrilla infestation by using a combination of an aquatic herbicide called fluridone and diver and snorkeler hand removal. This is a multi-year ongoing effort because hydrilla tubers are long-lived and they do not all sprout at once. Prior to herbicide treatments (started in 1995) hydrilla densely covered the bottom of Pipe and Lucerne Lakes and had started to grow over the tops of Eurasian watermilfoil plants also in the lakes. As of 2009, surveyors have not detected any hydrilla plants in Lucerne Lake since 2004 and no hydrilla plants in Pipe Lake since 2006.    Identification Hydrilla closely resembles two other aquatic plants found in Washington: The non-native plant Brazilian elodea Egeria densa and the native plant American waterweed Elodea canadensis. You can distinguish hydrilla from these look-alike species by the presence of tubers (0.2 to 0.4 inch long, off-white to yellowish, pea-like structures buried in the sediment). Neither Brazilian elodea nor waterweed has tubers. Other characteristics to look for include:    Leaves in whorls around the stem (generally five leaves per whorl). Serrations or small spines along the leaf edges. The midrib of the leaf is often reddish when fresh. We are especially concerned about new introductions of hydrilla in the Pacific Northwest. If you think that you have seen hydrilla growing in Washington, please contact Kathy Hamel ([emailprotected]) or Jenifer Parsons ([emailprotected]) immediately.   The hydrilla line drawing is the copyright property of the University of   Florida Center for Aquatic Plants (Gainesville). Used with permission.   Follow This Link for Technical Information About Hydrilla Trouble in Paradise: Factors that Impact Coral Health Part C: Impact of Climate Change on Coral Reefs Scientists monitor coral health in a variety of ways. Sometimes they are able to take direct measurements, but at other times they must rely on remote measurements taken by satellites or on indicators such as ocean temperature or the presence of algal blooms algal blooms: the rapid excessive growth of algae, generally caused by high nutrient levels. Algal blooms can result in decreased oxygen in a body of water when the algae die, threatening the health of local marine life.. The rise of global temperatures due to increased levels of greenhouse gases-namely carbon dioxide- in the atmosphere is a major concern around the world. But did you know that as the amount of CO2 in the atmosphere increases, the amount of CO2 in the oceans rises as well? In fact, estimates indicate that the oceans have absorbed as much as 50% of all CO2 released into the atmosphere by human activity since 1750. What does this mean for ocean life and coral reefs in particular? Explore what happens to the ocean when CO2 content increases. Show me materials needed for this experiment Hide 300 mL bromothymol blue (a dye used as an acid-base indicator) aqueous solution 500 mL beaker drinking straw Pour the bromothymol blue solution into the beaker. Observe the color of the solution. Show me more information about bromothymol blue solution Hide When a bromothymol blue solution is neutral (like pure distilled water) it will appear green. If the solution is slightly basic, the solution will appear blue. If the solution is acidic, it will appear yellow. Bromothymol Blue pH indicator dye in an acidic, neutral, and alkaline solution (left to right). Take a drinking straw and place it into the solution. Exhale through the straw into the solution. BE CAREFUL NOT TO INHALE ANY OF THE SOLUTION! Keep blowing into the solution until you see a change in color. Checking In What happened to the bromothymol blue solution when you added carbon dioxide? Stop and Think 1: Based on what you observed in the experiment, what do you think the effect of increased carbon dioxide levels has on the ocean? What consequences might this have for coral reefs? Look at the image below showing the oceans involvement in Earths carbon cycle. http://serc.carleton.edu/eslabs/corals/5c.html Hydrilla From Wikipedia, the free encyclopedia Jump to: navigation, search Hydrilla Scientific classification Kingdom: Plantae (unranked): Monocots Order: Alismatales Family: Hydrocharitaceae Genus: Hydrilla Rich. Species: H. verticillata Binomial name Hydrilla verticillata (L.f.) Royle in Lotus Pond, Hyderabad, India. Wikimedia Commons has media related to: Hydrilla verticillata Hydrilla (Esthwaite Waterweed or Hydrilla) is an aquatic plant genus, usually treated as containing just one species, Hydrilla verticillata, though some botanists divide it into several species. Synonyms include H. asiatica, H. japonica, H. lithuanica, and H. ovalifolica. It is native to the cool and warm waters of the Old World in Asia, Europe, Africa and Australia, with a sparse, scattered distribution; in Europe, it is reported from Ireland, Great Britain, Germany, and the Baltic States, and in Australia from Northern Territory, Queensland, and New South Wales.[1][2][3] Foliage detail It has off-white to yellowish rhizomes growing in sediments at the water bottom at up to 2 m depth. The stems grow up to 1-2 m long. The leaves are arranged in whorls of two to eight around the stem, each leaf 5-20  mm long and 0.7-2  mm broad, with serrations or small spines along the leaf margins; the leaf midrib is often reddish when fresh. It is monoecious (sometimes dioecious), with male and female flowers produced separately on a single plant; the flowers are small, with three sepals and three petals, the petals 3-5  mm long, transparent with red streaks. It reproduces primarily vegetatively by fragmentation and by rhizomes and turions (overwintering buds), and flowers are rarely seen.[2][4][5][6] Hydrilla has a high resistance to salinity (>9-10ppt) compared to many other freshwater associated aquatic plants. The name Esthwaite Waterweed derives from its occurrence in Esthwaite Water in northwestern England, the only English site where it is native, but now presumed extinct, having not been seen since 1941.[7] Hydrilla closely resembles some other related aquatic plants, including Egeria and Elodea. [edit] Status as an invasive plant Hydrilla is naturalised and invasive in the United States following release in the 1960s from aquariums into waterways in Florida. It is now established in the southeast from Connecticut to Texas, and also in California.[8] By the 1990s control and management were costing millions of dollars each year. Hydrilla can be controlled by the application of aquatic herbicides and it is also eaten by grass carp, itself an invasive species in North America. Insects used as biological pest control for this plant include weevils of genus Bagous and the Asian hydrilla leaf-mining fly (Hydrellia pakistanae). Tubers pose a problem to control as they can lay dormant for a number of years. This has made it even more difficult to remove from waterways and estuaries. As an invasive species in Florida, Hydrilla has become the most serious aquatic weed problem for Florida and most of the U.S. Because it was such a threat as an invasive species, restrictions were placed, only allowing a single type of chemical, fluridone, to be used as an herbicide. This was done to prevent the evolution of multiple mutants. The result is fluridone resistant Hyrdilla. As hydrilla spread rapidly to lakes across the southern United States in the past, the expansion of resistant biotypes is likely to pose significant environmental challenges in the future. [9] This abundant source of biomas is a known hyperaccumulator of Mercury, Cadmium, Chromium and Lead, and asuch can be used in phytoremediation.[10] shttp://en.wikipedia.org/wiki/Hydrilla  · This page was last modified on 12 February 2010 at 10:35.  · Text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. See Terms of Use for details. Wikipedia ® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. Bromothymol blue From Wikipedia, the free encyclopedia Jump to: navigation, search Bromothymol blue IUPAC name[hide] 4,4-(1,1-dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis(2-bromo-6-isopropyl-3-methylphenol) Identifiers CAS number 76-59-5  Y PubChem 6450 SMILES   [show] CC1=C(C(=C(C=C1C2(C3=CC=CC=C3S(=O)(=O)O2)C4=CC(=C(C(=C4C)Br)O)C(C)C)C(C)C)O)Br Properties Molecular formula C27H28Br2O5S Molar mass 624.38 g molà ¢Ã‹â€ Ã¢â‚¬â„¢1 Density 1.25 g/cm3 Melting point 202  Ã‚ °C, 475  K, 396  Ã‚ °F Acidity (pKa) 7.10 Supplementary data page Structure and properties n, ÃŽÂ µr, etc. Thermodynamic data Phase behaviour Solid, liquid, gas Spectral data UV, IR, NMR, MS   Y  (what is this?)  Ã‚  (verify) Except where noted otherwise, data are given for materials in their standard state (at 25  Ã‚ °C, 100  kPa) Infobox references Bromothymol blue (also known as bromothymol sulfone phthalein, Bromthymol Blue, and BTB) is a chemical indicator for weak acids and bases. The chemical is also used for observing photosynthetic activities or respiratory indicators (turns yellow as CO2 is added). Bromothymol blue acts as a weak acid in solution. It can thus be in protonated or deprotonated form, appearing yellow and blue respectively. It is bluish green in neutral solution. It is typically sold in solid form as the sodium salt of the acid indicator. It also finds occasional use in the laboratory as a biological slide stain. At this point it is already blue, and a drop or two is used on a water slide. The cover slip is placed on top of the water droplet and the specimen in it, with the blue coloring mixed in. It is sometimes used to define cell walls or nuclei under the microscope. Bromothymol blue is mostly used in measuring substances that would have relatively low acidic or basic levels (near a neutral pH). It is often used in managing the pH of pools and fish tanks, and for measuring the presence of carbonic acid in a liquid. A common demonstration of BTBs pH indicator properties involves exhaling through a tube into a neutral solution of BTB. As carbon dioxide is absorbed from the breath into the solution, forming carbonic acid, the solution changes color from green to yellow. Thus, BTB is commonly used in middle school science classes to demonstrate that the more that muscles are used, the greater the CO2 output. Bromothymol is also used in obstetrics for detecting premature rupture of membranes. Amniotic fluid typically has a pH > 7.2, bromothymol will therefore turn blue when brought in contact with fluid leaking from the amnion. As vaginal pH normally is acidic, the blue color indicates the presence of amniotic fluid. The test may be false-positive in the presence of other alkaline substances such as blood, semen, or in the presence of bacterial vaginosis. The pKa for bromothymol blue is 7.10. [edit] Indicator colors BTB indicator in pH acidic, neutral, and alkaline solutions (left to right). Bromothymol Blue (pH indicator) below pH 6.0 above pH 7.6 6.0 à ¢Ã¢â‚¬  Ã¢â‚¬  7.6