Answer:
Myasthenia gravis is considered to be an autoimmune disorder. In an autoimmune disease, your immune system mistakes a part of your own body as foreign, resulting in its destruction. In the case of myasthenia gravis, your immune system targets the acetylcholine receptors that your muscles need in order to contract.
Explanation:
I believe you are referring to the Water Cycle.
I think that it means you should only drink what it says on the can, like if it says 2 cans within 48 hours. then its most likely that its becuase thats what is healthy for you.
Hypodermis because of the melanin
I believe the answer that you are searching for is c
