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What leads to a decrease in biodiversity?

Answer 1

Anything that removes a particular biological species from an ecology.

A decline in "diversity," which is a measure of the variety of species present in an ecosystem, can be attributed to overuse (agriculture, hunting, etc.) of a resource or to the displacement of several species by a single, typically invasive species.

In general, biodiversity is desirable because it reduces the likelihood of disease epidemics, undesirable genetic legacies, and possible future declines in biodiversity.

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Answer 2

Roman Acosta

Factors such as habitat destruction, pollution, climate change, overexploitation of resources, invasive species, and human activities contribute to a decrease in biodiversity.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.