Answer:
I think it is called selective breeding, I don't think it is called that but hope this helps
The answer should be B, prokaryotic cells use binary fission as a means of "reproduction"
There would be less oxegen and also economically exploit us as 80% of things we use is from trees. we will be ruined, that's for sure.
Enzymes are used to speed up reactions. They’re also called catalysts and their main purpose is as a speed boost for reactions