The negative impact humans could have on an ocean ecosystem is pollution, which can lead to a mass extinction on the wildlife.
1) Are they reliable?
2) Are they relevant?
3) Are they recent?
4) Are they sound resources?
5) Are they a primary source?
6) Are they a secondary source?
D would be the answer to this question
<span> C - nitrogen fixation, ammonification and nitrification </span>
Answer:
Small intestine allow nutrients to be absorbed.
