asked 234k views
0 votes
Photosynthetic cyanobacteria created what important component of the atmosphere?

a. nitrogen
c. oxygen
b. hydrogen
d. carbon dioxide

2 Answers

4 votes

Answer:

c oxygen

Step-by-step explanation:

got it correct on ed

answered
User Dushyant Singh
by
9.0k points
5 votes
C because oxygen was a byproduct of photosynthesis and proved to be EXTREMELY important in the atmosphere.
answered
User Ahawker
by
8.1k points
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