Answer: Option A) Proteins and nucleic acids
Explanation:
Proteins are composed of several amino acids with positively charged amino groups in their side chain. These amino groups (NH2) have nitrogen atoms in them.
Nucleic acids, as well have nitrogen atoms in the nitrogenous bases present in their structure. E.g DNA and RNA has Adenine molecules with two nitrogen atoms in its structures
A. Earth does have a bigger gravitational pull because Planet Earth is huge and it needs and has all the gravity.
Racial and Economic Inequalities
Hope this helps (:
D. they are homologous
homologous is when the organs/limbs etc are similar in position and structure but the function doesn’t have to be the same
