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What component of Earth's atmosphere exists entirely as a result of photosynthesis?

O oxygen gas
O water vapor
O nitrogen gas
O carbon dioxide gas

What component of Earth's atmosphere exists entirely as a result of photosynthesis-example-1
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User Hitobat
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2 Answers

8 votes
Oxygen gas. During photosynthesis a plant takes in carbon dioxide and releases oxygen.
answered
User Ray Hulha
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13 votes

Answer:

oxygen gas

Step-by-step explanation:

because oxygen is needed for life on Earth

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User MisutoWolf
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