Answer:
I believe C is the correct answer I think not a 100% sure
Explanation:
Answer:
Early cyanobacteria in stromatolites are thought to be responsible for increasing the amount of oxygen in the primeval Earth's atmosphere through their continuing photosynthesis. They were the first known organisms to photosynthesize and produce free oxygen.
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The answer is letter A.
<span>Organelles and other cellular material are held within a cell by a cellular membrane. These membranes are what consist of a cell's exterior.
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Answer:
C. Electron (e-) has a negative charge
They are <span>called </span><span>pathogens.</span>
