I believe it is C but not sure.
Answer:
it may be erosion, I'm not quite sure but it could possibly be a form of erosion.
Answer:
absorption of oxygen
Explanation:
the others would not make sense so i think this is the answer
Answer:
In cells. The increase in size and changes in shape of a developing organism depend on the increase in the number and size of cells that make up the individual. Increase in cell number occurs by a precise cellular reproductive mechanism called mitosis.
