What is the main function of the nervous system? A. regulating sleep

B. preventing accidental poisoning

C. Controlling the body's actions and reactions

Controlling the body's action's and reactions.

Explanation:When you get nervous, your body reacts to it.

the right answer is a. skin cells forming from sunlight.

the liver is an organ endowed with a fantastic ability to regenerate

. thus, if a hepatectomy (ablation) of 70% of the hepatic mass is performed in the rat, there is complete recovery in 7 to 10 days.

prokaryotes are beings that have existed since the existence of life on earth, and do not come from another realm.

ribosomes are organelles that exist naturally in eukaryotes, either in free form or attached to the endoplasmic reticulum.

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explanation: