What two processes contributed oxygen to Earths second atmosphere? Group of answer choices photosynthesis and volcanism volcanism and weathering photosynthesis and photolysis weathering and rainfall

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asked Apr 16, 2022 58.6k views

3 votes

What two processes contributed oxygen to Earths

second atmosphere?

Group of answer choices

photosynthesis and volcanism

volcanism and weathering

photosynthesis and photolysis

weathering and rainfall

Biology
high-school

Ben Birney asked

by Ben Birney

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1 Answer

3 votes

Answer: photosynthesis and photolysis

Step-by-step explanation:

Squatting Bear answered Apr 20, 2022

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1 Answer

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