snaphatc snaphatc

06-06-2020
Biology

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When and in what habitat did animals likely originate, and when did today's major
groups of animals arise?

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hughesbillyrobert hughesbillyrobert

06-06-2020

Answer: To our current understanding, animals first appeared in the Precambrian Era, during what is called the Cambrian Explosion, and they are believed to have arisen in shallow water environments, today's major groups of animals originated about 542 million years ago

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cattiaa29399 cattiaa29399

06-06-2020

I believe from the underground.

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