Answer:
I think it is C but I'm not 100% sure
Answer:
Plants and animals release acid forming chemicals that cause weathering and also contribute to the breaking down of rocks and landforms.
Explanation:
sorry if im wrong
Answer down below:
If a deer population starts eating all the plants in a specific area, the plants, of course will kill the plants. But also, once all the plants will run out, all the organisms and deer will eventually die out.
It's controversial because the best source of stem cells is a human embryo (an aborted fetus).