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Life and How It's Formed

Select the on...

Question

Select the one which was not found during the origin of life.

A

Ammonia

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B

Methane

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C

Oxygen

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D

Hydrogen

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Solution

The correct option is C Oxygen
Oxygen was generated as a byproduct of cyanobacterial photosynthesis as early as 3 billion years ago, only.

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