An explosion of photosynthetic life in the ancient oceans increased the levels of co2 in earth's atmosphere.
true or false?

false

Explanation:

As an increase in the left of the photosynthesis in the ancient oceans and also increase the levels of the carbon dioxide in the earth's oceans and tends to absorb more of the earth's atmosphere and also induced by the geochemical process and the thus a result of the carbon dioxide contents.

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