ECOLOGY
BIODIVERSITY AND ITS CONSERVATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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almost 20 percent of all species.
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more than half of all species.
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all species on Earth.
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one or two species per century.
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Detailed explanation-1: -Destruction of Habitat – It is currently the biggest cause of current extinctions. Deforestation has killed off more species than we can count.
Detailed explanation-2: -Under the Endangered Species Act (ESA), plant and animal species may be listed as either endangered or threatened. “Endangered” means a species is in danger of extinction throughout all or a significant portion of its range. “Threatened” means a species is likely to become endangered within the foreseeable future.
Detailed explanation-3: -The Living Planet Index (LPI) data tells us how species are faring, by measuring trends in monitored populations of vertebrate species. It is not a census of all wildlife, but reports the average percentage change in size of these populations monitored throughout the world.
Detailed explanation-4: -In ecology, an endemic species refers to a species that is native to where it is found. A species can be endemic to a particular small geographical area, such as a single island, or to a larger area, such as a continent. If it is found elsewhere, then, endemic is not the word to describe it.