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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 Earths Atmosphere Exists Entirely As A Result Of Photosynthesis O Oxygen Gas O Water Vapor O Nitrogen Gas O Carbon Dioxide Gas class=

Answer :

Answer:

oxygen gas

Explanation:

because oxygen is needed for life on Earth

Oxygen gas. During photosynthesis a plant takes in carbon dioxide and releases oxygen.