The correct answer is C.
The cyanobacteria hypothesis is a leading theory for how O2 was made prevalent.
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For divergent boundary: when the crust of the earth fractures it allows magma to reach the surface. For convergent boundary: When one of the converging plates move underneath the other, a process also known as subduction; the new magma rises and can erupt to form volcanos. For the Hotspot: magma pushes through cracks in the crust to form volcanos. Hope this helps!!
To balance the chemical equation it would be 2
Answer:
yo need to learn more sorry but I don't now
