The central nervous system consists of
a. all the nervous tissue that lies outside the central nervous system.
b. just your brain.
c. just your spinal cord.
d. your brain and spinal cord.

Why aren't the stains like crystal violet and safranin washed away with water during simple staining?

Which of the following is an advantage of solar energy?

Ialready know the answers to these questions and they are on the attachment. but i just need to know why that answer is the correct one. plz asap! this is for a report that i need to email by 10!