asked 62.3k views
1 vote
How did oxygen (O2) get into Earth's atmosphere??

asked
User Satyapol
by
7.8k points

1 Answer

4 votes
through photosynthesis of plants. Plants take in carbon dioxide (CO2) and produce oxygen (O2)
answered
User Bbeckford
by
8.0k points

No related questions found

Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.