How did cyanobacteria affect Earth’s early atmosphere? A. They replaced oxygen with carbon dioxide in the atmosphere. B. They eliminated the harmful ultraviolet rays of the Sun. C. They replaced carbon dioxide with oxygen in the atmosphere. D. They absorbed ozone molecules from the atmosphere.
Answers
Answered by
2
A. They replaced O2 with CO2 in the atmosphere.
Hope it helps
Plz mark the Brainliest and follow
Answered by
1
because they are photosyntetic and aquatic cyanobacteria often called blue green algae
Similar questions