Biology, asked by omi53, 11 months ago

what is the source of oxygen​

Answers

Answered by charlesvtw
1

Answer:

Forest

Explanation:

Answered by Anonymous
4

The main source of atmospheric free oxygen is photosynthesis, which produces sugars and free oxygen from carbon dioxide and water: Photosynthesizing organisms include the plant life of the land areas as well as the phytoplankton of the oceans.

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