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Biodiversity and Conservation

The IUCN Red List Categories

Which of the following statements best explains the fact that

Question

Medium

Solving time: 3 mins

Which of the following statements best explains the fact that 99.9% of all species that have ever existed on planet earth are now extinct?

A

Climate changes associated with large comet or asteroid impacts occur faster than organisms can change themselves and adapt to the new environmental conditions.

B

Genetic variations within a population occur through random mutations and given enough time, the environment will change in such a way that no existing genetic-based phenotypes permit survival.

C

The accumulation of random mutations in the genome of all organisms eventually leads to frameshift mutations in critical genes and are ultimately lethal.

D

The rapid increase in global temperatures in the past 100 years, combined with ocean acidification, heavy metal contamination, and ozone depletion caused by human activities have caused 99.9% of all of Earth's species to go extinct.

E

All of the above

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Which of the following statements best explains the fact that 99.9% of all species that have ever existed on planet earth are now extinct?

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Text solutionVerified

The extinction of species can occur due to various reasons, organisms not being able to adapt to changing climatic conditions, human activities, genetic mutations that did not favor the survival of the species.

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Question Text	Which of the following statements best explains the fact that 99.9% of all species that have ever existed on planet earth are now extinct?
Topic	Biodiversity and Conservation
Subject	Biology
Class	Class 12
Answer Type	Text solution:1
Upvotes	104