Answer:
B: sample 4
Explanation:
This is because amino acids are basic units for proteins
Answer: nitrogen and hydrogen
N2 +3 H2 ---> 2NH3
Explanation:
You're answer would be B) Terrae.
Hope this helps,
♥<em>A.W.E.<u>S.W.A.N.</u></em>♥
The first one is commensalism. The second one is mutualism. The last one is parasitism.