The atmosphere is the answer
Hope I helped you
It is the Mid-Atlantic Ridge.
No not good enough you can do better
Amino acids are joined by peptide bonds in a polypeptide chain. A peptide bond is one in which the molecules of a carboxyl react with the amino group of another molecule. A molecule of water is then formed and release, leaving the functinal groups to bond together and form a polypeptide chain.
1) Multiple
2) Alleles
3) Pleiotropy