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Question: Answered & Verified by Expert
Theory of origin of species by Darwin and Wallace doesn't explain all of these except
BiologyEvolutionNEET
Options:
  • A arrival of the fittest.
  • B the development of vestigial organs
  • C over-specialization of some organs like tusk of elephants
  • D the cause of struggle for existence.
Solution:
1616 Upvotes Verified Answer
The correct answer is: the cause of struggle for existence.
Darwin's theory on origin of species states that over reproduction and lack of available resources causes struggle for existence. In the struggle for existence, nature will select those organisms with favourable variations (survival of the fittest). Continuous environmental changes along with natural selection leads to origin of species.

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