Answer:Myelin is a lipid-rich (fatty) substance that surrounds nerve cell axons (the nervous system's "wires") to insulate them and increase the rate at which electrical impulses (called action potentials) are passed along the axon.
Explanation:
The body is about 55% plasma
Answer: If you look it up online it tells you exactly why, and has reasoning for everything and will be way more accurate.
Explanation:
this is true. when it is warmer the plant and insects can migrate to these other places so they do not have to die or hibernate through winter
