Science, asked by DHANESHREE3404, 1 year ago

About how many year before was the photosynthetic life present on the Earth?
A. 4 Million
B. 3 million
C. 5 Million
D. Infinite

Answers

Answered by priyanshi2944

5

Answer:

Previously, scientists believed that anoxygenic photosynthesis,and that the earth's atmosphere contained no oxygen until about 2.4 to 3 million years ago.

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