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What created oxygen in the early atmosphere Photosynthetic bacteria Asteroids hitting the earth plankton Volcanic eruptions forests
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4 votes
What created oxygen in the early atmosphere

Photosynthetic bacteria
Asteroids hitting the earth
plankton
Volcanic eruptions
forests

User Beygi
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7.6k points

1 Answer

4 votes
Oxygen was created by the first signs of photosynthesis, done by plants and algae. =)
User Merhawi Fissehaye
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8.0k points
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