Here something that might help
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Most scientists believe that for half of </span>Earth's<span> 4.6-billion-year history, the</span>atmosphere<span> contained almost no </span>oxygen<span>. Cyanobacteria or blue-green algae became the first microbes to produce </span>oxygen<span> by photosynthesis, perhaps as long ago as 3.5 billion years ago and certainly by 2.7 billion years ago.</span>
Because some surface water might turn into ground water and some channels are there and it might go into a large body of water
I believe that Cytokenesis follows Mitosis, because cytokenesis is the actual split of the cells' membranes (after telophase)! Hope this helps
Answer:
A
Explanation:
prometaphase is the process that seperates the duped genetic meterial carried on a nucleus
When the sea floor spreads or collides it creates breakages which would be ocean ridges and deep sea trenches
