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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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Apr 16, 2022
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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
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Answer: photosynthesis and photolysis
Step-by-step explanation:
Ez
Squatting Bear
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Apr 20, 2022
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Squatting Bear
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