Skin is a vital tissue in one's body. It then protects one from dehydration and infection and allows one to feel heat or pressure. It would be renewed throughout in one's life. The answer to the question is c. They are unipotent then.
Coralline and calcareous algae build-ups are very essential for the development of coral reefs. In addition, when these coralline and calcareous algae tends to "stick" on landforms below the ocean surface, and as these life forms grows and continuously expands, they now form what we call "reefs."
C. Vegetation
because even though cows are important, all life is and not just that species and then cars and factories are unnatural and would not be critical for the carbon cycle in nature.
it is b because you see take a ruler and measure it
