Exam 9: Sustaining Biodiversity: the Species Approach

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HIPPCO is

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Many biologists consider the rapid loss of the earth's biodiversity to be the most serious and long-lasting environmental problem the world faces.

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Extinctions, even those caused unintentionally by humans, seem less disturbing than the volume of extinctions and their implications for future generations.What do you think the importance is of the volume of extinctions? Do we have a responsibility to retain as much of the biodiversity as possible, or are other living organisms to be used as we see fit? Explain your answer.

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The ____________________ has the responsibility for identifying and listing endangered and threatened oceans species under the ESA of 1973.

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Four of the following are ways that the pressure can be taken off of some endangered species; one is not.Choose the one that is not.

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During this century, with global climate change and other human activities, the current extinction rate could reach ____________________ times the background rate of extinction.

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The only major group of species that have escaped increasing extinction threat are the primates, where less than 10% are currently threatened with extinction.

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A new underground vault on a remote island in the Arctic is intended to preserve _______________ and endangered plant species by storing their seeds in refrigerated, low-humidity environments.

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According to researchers, the greatest threat to wild species is

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In the state of Hawaii, 95% of endangered species are endangered because of invasive species.

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Those who oppose the Endangered Species Act say it has been a failure. Biologists say it has not, because of four of the following five reasons. Choose the one that is not one of the four reasons.

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The active ingredients in nine of the ten leading prescription drugs originally came from wild organisms.

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Which of the following organisms pollinates nearly 100 commercially grown crops in the U.S., including one-third of U.S.fruit, nut, and vegetable crops?

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Biologists estimate there are now about 4 million ____________________ in Florida, Texas, and 22 other U.S.states.

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The biggest problem with invasive species is that in the new location they

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Which of the following would be allowed under a habitat conservation plan?

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Bioprospectors are miners that are involved in causing the extinction of plants and animals.

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It will take ____________________ generations for natural speciation to rebuild the biodiversity we are likely to destroy in this century.

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We should act to prevent premature extinction of species, in part because they contribute to ____________________, those services that support our economies.

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The rate of species loss and the extent of biodiversity loss are likely to ____________________ during the next 50─100 years as a result of the growth of the world's ____________________ and resource use per person.

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