Answer:
a-atmosphere
Explanation:
atmosphere is a body of gases located on a planet or other materials
Consists of hemoglobin, purified from bovine blood, free in the plasmabinds oxygen in the lungs then delivers oxygen to the bodycell-free hemoglobin releases the oxygen more quickly than red blood cellsthe risk of high blood pressure and heart attacks<span>stored at room temperature and compatible with all blood types</span>
It is known as a concentration gradient which in diffusion will always flow from ares of high concentration to areas of low concentrations
So i believe the answer to this is A.
The same copies of the dna with the genes is distributed in all the cells of the body. This makes all the cells of the body to have the same genetic material. In lower organisms, dna replication is necessary for reproduction in order to have the same genes in the progeny.
