It controls all the involuntary actions like digestion and beating of our heart
Answer:
Explanation:
we can do this together just give me some time
Answer:
transport across membranes is called diffusion.
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it is caused by relaxation of smooth muscle cells that are in the vessel walls which in the large arteries.
Answer:
organism growth
Explanation:
because an organism starts to grow by using system and all and not only cells i guess
