Answer:
C. top soil has more organic matter.
Explanation:
It's more fertile than subsoil, due to having more organic matter and because fertilizers are usually added to the topsoil only.
To make changes to it or to take out some genes of interest
<span>Blood is a liquid and has cellular parts. The liquid contains substances such as proteins and lipids. The cellular constituents are erythrocytes (red blood cells), leukocytes and platelets.</span>
Answer:
Erythrocytes is the answer
