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Which were the organisms who changed ear...

Which were the organisms who changed earth's surface from reducing to the oxidizing

A

Autotrophs

B

Heterotrophs

C

Photoautotrophs

D

Chemotrophs

Text Solution

Verified by Experts

The correct Answer is:
c
Cyanobacteria appeared in precambrian period around 3.2 billion years ago and were the first to have oxygenic photosynthesis to evolve `O_(2)` in photosynthesis that caused conversion of primitive reducing atmosphere to present day oxidising atmosphere (oxygen revolution).
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