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3 years ago

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Jon is researching the oxygenation of Earth’s atmosphere. Which unicellular organism do biologists consider to be the main contr

ibutor to that process?
A. paramecia
B. amoebae
C. dinoflagellate
D. cyanobacteria

Answer is D. cyanobacteria

1 answer:

andriy [413]3 years ago

7 0

Answer is D.... Cyanobacteria

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