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What is species extinction and what are the primary causes?

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Complete loss of a species, over hunting, loss of habitat, anything humans do
User Sebastian S
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Answer:

The extinction of any species is an irreversible loss of part of the biological richness of the Earth. ... Extinction can be a natural occurrence caused by an unpredictable catastrophe, chronic environmental stress, or ecological interactions such as competition, disease, or predation.

User Waris Shams
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