Environmental Science Study Set 5

Environmental Science

Quiz 8 :

Sustaining Biodiversity:the Species Approach

Quiz 8 :

Sustaining Biodiversity:the Species Approach

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Summarize the major threats to bird species. List two reasons why we should be alarmed by the decline of many bird species. Describe the relationships between vultures, wild dogs, and rabies in parts of India.
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According to the survey 12% of all bird species is threatened with extinction cause of fragmentation, habitat loss, degradation in which third fourth threatened bird species live in forest. In the tropical region Asia and Latin America bird being cleared at rapid rate. There are two reasons why people should alarmed decline bird species.
• The bird has property to excellent environment indicator because they live in several climates and easy to track and count.
• The second reason is that they perform important role in economical and ecological of ecosystem.
The vultures played major role in environment they fed on the carcasses of cow but due to extinct of vulture huge number of cow caresses and now it consumed by the dog and wild dog population growing as large number of food. This increment tends to risks of people bite by rabid dogs. According to survey 30000 people died in India due to this disease.

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What is the key concept for this section What is biological extinction What is a mass extinction How can the extinction of a species affect other species and ecosystem services Describe how scientists estimate extinction rates. Give three reasons why many extinction experts believe that projected extinction rates are probably on the low side. What percentage of the world's species are likely to go extinct, largely as a result of human activities, during this century Distinguish between endangered species and threatened species and give an example of each. List four characteristics that make some species especially vulnerable to extinction.
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The key concept of this section is extinction of species is 100 to 1000 faster than the modern human involve and it is accepted that at the end of this century is 10000 times higher than man arrived. The biological extinction is defined as the species no longer found anywhere on the earth. The mass extinction is defined as the extinction of species in short time period of geologic time.
This extinction affects the other species because mass of extinction on the earth refer to the returned overall biodiversity equal or high level. According to survey Scientist estimated that the extinction rate is 100 to 1000 times estimated which exist of about 0.0001% before modern human involved 200000 years ago. There are fowling reason extinction rate is slow.
• The rate of species loss and extent biodiversity losses increase during 50 to 100 year.
• The current projected extinction rate is lower than endangered center of biodiversities.
• Third resin is the eliminating and degrading fragment simplifying fragments many biological diverse environment.
Due to human activities it is accepted that at the end of this century is 10000 times higher than man arrived. The endangered species are those species which individuals survivors that the species could become extinct.
The example of endangered species is giant panda. The threatened species are those species which enough remaining individuals survive in short term. The example of threatened species is polar bear. There is four characteristic that make some species vulnerable.
• Low reproductive rate
• Specialized niche
• Narrow distribution
• Feeds at high tropic level

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What is the key concept for this section What are three reasons for trying to avoid causing the extinction of wild species Describe two economic and two ecological benefits of species diversity. Explain how saving other species helps save our own species and our cultures and economies.
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The key concept of this section is avoided speeding and extinction of wild animal because they provide economic and ecological services. There is three reasons to avoiding extinction of the animals.
• The species are very important for human life they provide natural resources and natural services. Specs has major role in ecosystem function of energy flow so they are important for ecology and it keep principal of sustainability with chemical cycling.
• Each spaces has rights to exist people have ethical responsibility to prevent species become extinct.
• The extinction indicates that past 5-10 million year natural speciation to rebuild biodiversities it is lost during this century.
The economical serves are various plant provide food crops, fuel wood, and lumber. The ecological benefit is making cancer drugs and bio-prospecting. The extinction of the species is rely big problem. According to the survey there are fewer than 30000 left in the wild. The degradation of the world's ecosystem and overall biodiversity prevent by species so they are important for the human life.

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Congratulations! You are in charge of preventing the extinction, caused by human activities, of a large share of the world's existing species. List the three most important steps you would take to accomplish this goal.
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What are the chapter's three big ideas Describe how the three principles of sustainability are related to protecting the polar bear and other wild species from extinction, and how they are related to protecting the earth's overall biodiversity.
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Wildlife ecologist and environmental philosopher Aldo Leopold wrote this with respect to preventing the extinction of wild species: "To keep every cog and wheel is the first precaution of intelligent tinkering." Explain how this statement relates to the material in this chapter.
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What are three aspects of your lifestyle that might be directly or indirectly contributing to the extinction of the polar bear ( Core Case Study )
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Describe the poaching of wild species and give three examples of species that are threatened by this illegal activity. Why are wild tigers likely to disappear within a few decades What is the connection between infectious diseases in humans and the pet trade Explain how Pilai Poonswad helped to protect the rare rhinoceros hornbills in Thailand. Describe the threat to some forms of wildlife front increased hunting for bush meat.
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Do you accept the position that each species has the inherent right to survive without human interference, regardless of whether it serves any useful purpose for humans Explain. Would you extend this right to the Anopheles mosquito, which transmits malaria, and to infectious bacteria
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Examine these data released by the World Resources Institute and answer the following questions. img Arrange the countries from largest to smallest according to total land area. Does there appear to be any correlation between the size of country and the percentage of threatened breeding bird species Explain your reasoning.
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Examine these data released by the World Resources Institute and answer the following questions. img Complete the table by filling in the last column. For example, to calculate this value for Costa Rica, divide the number of threaded breeding bird species by the total number of known breeding bird species and multiply the answer by 100 to get the percentage.
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Give two examples of the benefits of introducing some nonnative species. Give two examples of the harmful effects of nonnative species that have been introduced (a) deliberately and (b) accidentally. Describe the harmful and beneficial effects of introducing the kudzu vine. List four ways to limit the harmful impacts of nonnative species. Explain why prevention is the best way to reduce threats from invasive species and list five ways to implement this strategy. Summarize the roles of population growth, overconsumption, pollution, and climate change in the extinction of wild species. Explain how pesticides such as DDT can be biomagnified in food chains and webs. Describe what is happening to some honeybee populations in the United States.
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Describe your gut-level reaction to the following statement: "Eventually, all species become extinct. So it does not really matter that the passenger pigeon is extinct, or that the polar bear ( Core Case Study ) or the world's remaining tiger species are endangered primarily because of human activities." Be honest about your reaction, and give arguments to support your position.
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What is the key concept for this section What is HIPPCO What are the six largest causes of extinction of species resulting from human activities What is the greatest threat to wild species What is habitat fragmentation Describe the major effects or habitat loss, and fragmentation.
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CORE CASE STUDY Describe how human activities threaten polar bears in the Arctic (Core Case Study ).
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What is the key concept for this section Name two international treaties that are used to help protect species. What is the U.S. Endangered Species Act How successful has it been, and why is it controversial Describe efforts to protect sea turtles and whales from extinction hastened by human activities.
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Summarize the roles and limitations of wildlife refuges, gene banks, botanical gardens, wildlife farms, zoos, and aquariums in protecting some species. What is the precautionary principle and how can we use it to help protect wild species and overall biodiversity
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Write an argument for (a) preserving a weed species in your yard, and for (b) not exterminating a colony of wood-damaging carpenter ants in your home.
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What would you do if fire ants invaded your yard and house Explain your reasoning behind your course of action. How might your actions affect other species or the ecosystem in which you live
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