Answer:
Both systems control movement.
Explanation:
<span>Edward Jenner discovered a vaccination against [smallpox] by infecting a boy with [cowpox]. He noticed that milkmaids who got cowpox never got smallpox and developed his theory from there. He is the father of the study of immunity and immunisation.</span>
The answer is A hydrochloride acid
Some parts of out body itch because of many reason they might be
•Dry Skin
•Bug Bites(bedbug/lice/scabies)
•Itchy skin condition
•Allergic reaction
•Skin Cancer
•Warning of a disease (Diabetes/HIVetc)
(There are other reasons too like:
•Reaction to plants and marine life(poison ivy/other plants you might be allergic to/water/pond)
•Nerve Problem)
Anyways it ming not be something to be afraid of because sometimes my skin too itches without any reason. It can be that we have a dry skin. But if you want to you can go to a dermatologist. Just remember that it is okay to have some rashes and itches. Stay safe
