ECOLOGY
BIODIVERSITY AND ITS CONSERVATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -The gradual process of species becoming extinct is known as background extinction.
Detailed explanation-2: -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.
Detailed explanation-3: -Background extinction rate, or normal extinction rate, refers to the number of species that would be expected to go extinct over a period of time, based on non-anthropogenic (non-human) factors.
Detailed explanation-4: -It never reappears, so extinct species never reappears. So it is a true statement, extinct species will never reappear. And the fourth option says human activities have less impact on extinctions. It is not a true statement because 13 human activities contribute to more than 90% of all mammal species extinctions.