Loss of Biodiversity — Flashcards

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Biodiversity loss is the decline in the variety of living organisms because species become threatened, endangered, or extinct, and their habitats are damaged or destroyed. It happens when the natural …

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Tropical zone areas cover only 1/4th of the globe but house about 3/4th of the world's population. This creates heavy pressure on land, forests, and wildlife. As a result, tropical regions face major …

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The maximum damage in tropical rain forests has been done to the Zaire basin in Africa and the Amazon basin in South America. About half of the world's species are found in these forests, so their des…

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Threatened species are species whose lives are at risk and who always run the danger of losing their lives. WCMC's Red Data Books mention 66,000 plant species and 2,000 animal species as threatened wo…

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Endangered species are species that face a high risk of extinction in the near future. Mace and Lande (1991) defined endangered species as species with a 20% probability of extinction within 20 years …

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Extinct species are species for which no member remains alive anywhere in the world. Once a species becomes extinct, it cannot recover because its living population no longer exists.

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Threatened species are at risk of loss. Endangered species are in a more serious condition and may become extinct soon if harmful factors continue. Extinct species have no living member left anywhere …

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UNEP assessed 102 countries and found that densely populated countries had higher proportions of threatened species than thinly populated countries. In 51 densely populated countries, about 5.1% of bi…