No, the cell membrane regulates movement of materials into and out of cells.
The answer may be, Replication, but I am unsure.
Answer:
not sure but I think it's option C.
Answer:
nature preserve to save the population since thats where they breed
Answer:
The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.