They think that people started as a fish and there was a resolution into a bigger fish then into a land creature then into a monkey then into a man. They think that the earth was a little rock at the beginning but then other rocks joined it and it became 1 big planet. But this is just what they think.
A phosphate group and single nitrogen containing based
Answer:
A. Carbon dioxide travels from the heart to the lungs in pulmonary arteries
Explanation:
Cutaneous membrane also known as the skin
