Red streaks are made up of iron oxides on some rocks, formed when iron in ocean reacts with oxygen and settled to the ocean bottom. This chemical and physical process occurs due to
A
Evolution of cyanobacteria
B
Early reducing atmosphere of Earth
C
Metabolic activity of the first heterotrophs
D
Symbiosis of photosynthetic bacteria and protists
E
Adaptation of plants to terrestrial environments
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Solution
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Correct option is B. Evolution of cyanobacteria
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