A cow will eat grass in a field, the grass is the plant and the plant eater is the cow. (Srry if this is not what your looking for)
Explanation:
When connected together by series of peptide bonds, amino acids form a polypeptide, another word for protein. The polypeptide will then fold into a specific conformation depending on other interactions (dashed lines) between its amino acid side chains.
Answer:
living things do not reproduce
The temperature increases as you go deeper in the aquatic system.
Http://www.collective-evolution.com/2014/07/07/new-study-finds-88-percent-of-earths-ocean-surface-no...
This should be of use here.