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What was the major contributor of oxygen to earth's early atmosphere ? A) photosynthesis B) Organic respiration C) ozone decomposition D. Decomposition of ocean water Expla…

What was the major contributor of oxygen to earth's early atmosphere ? A) photosynthesis B) Organic respiration C) ozone decomposition D. Decomposition of ocean water Expla…
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What was the major contributor of oxygen to earth's early atmosphere ?

A) photosynthesis

B) Organic respiration

C) ozone decomposition

D. Decomposition of ocean water

Explain your answer in your own words

asked
User Awy
by
8.2k points

2 Answers

3 votes
The answer is A) photosynthesis
answered
User Bastien Beurier
by
9.2k points
3 votes
I this the answer is B
answered
User Jausen Brett
by
8.4k points
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