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baherus [9]
3 years ago
14

What is the origin of oxygen in earth's atmosphere

History
1 answer:
prisoha [69]3 years ago
6 0

Answer:

The answer is tiny organisms known as cyanobacteria, or blue-green algae. These microbes conduct photosynthesis: using sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen.

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