Salutations!
What component of Earth’s atmosphere exists entirely as a result of photosynthesis?
Oxygen is the component of Earth's atmosphere that is existed entirely as a result of photosynthesis. Photosynthesis is a procedure that plants and other different organisms use sunlight to make their food. It is a chemical procedure.
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Answer:
Oxygen levels are generally thought to have increased dramatically about 2.3 billion years ago. Photosynthesis by ancient bacteria may have produced oxygen before this time. ... In addition, early plants and algae began to release oxygen at a faster rate. Oxygen levels then showed a dramatic increase.
invertebrates and Vertebrates
