I'm not sure, but I think that its your skin that protects the internal tissues.
I think that drugs and their affects would be interesting to learn about, because its a big issue in our world today, and it's good to learn about these things (such as drugs/alcohol)
Measured by how well he or she does the job
Answer:
The central nervous system controls many functions of the body and mind. It consists of two parts which are the brain and the spinal cord.
Explanation:
amount of times you do something in a certain amount of time
