Asked by nano
What component of Earth’s atmosphere exists entirely as a result of photosynthesis?
oxygen gas
water vapor
nitrogen gas
carbon dioxide gas
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oxygen gas
Photosynthetic organisms (cyanobacteria, algae, plants) produced free O2 as a byproduct, leading to the oxygen-rich atmosphere we have today.
Photosynthetic organisms (cyanobacteria, algae, plants) produced free O2 as a byproduct, leading to the oxygen-rich atmosphere we have today.
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