Multicellular Organisms Are Made Of More Than One Cell. They Are Not Just One Cell. Hence The Name "Multi." If They Were One Cell, They Wouldn't Really Be An Organism.
~Spades15
Answer:
I believe the answer is A
Explanation:
veins carry deoxygenated blood back to the heart.
Answer:
photosynthesis
Explanation:
it takes carbon into the biosphere
It should be D.
hope this helps