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First life form on earth was a...

First life form on earth was a

A

cyanobacterium

B

chemoheterotroph

C

autotroph

D

photoautotroph.

Text Solution

Verified by Experts

The correct Answer is:
B
It is presumed that the first living organisms were chemoheterotrophs that obtained energy by the fermentation of complex organic substances available to them from the sea broth. They were anaerobes.
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