Three main parts of your nervous system is are ?​

The central nervous system is made up of the brain and spinal cord.

The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.

Explanation:

:)

The central nervous system and the peripheral nervous system  are both the main parts of your nervous system

Explanation:

answer; /// the answer to the first question is (b) it began when people first deliberately seeds; /// and (d); // it gave people a steady food supple for the first time;

probably 3 since archeologists and historians don’t understand there writing.