Answer:
HIV is a virus that weakens the body's immune system, which is passed through blood, semen, or vaginal fluids. Ex: Sex, sharing needles. Its not curable, but with proper medical care it can be controlled. Poor treatment of HIV can cause AIDS, aka, stage 3 HIV.
a vasectomy, as a male that is his only option to ensure that he can't get any women pregnant
Peripheral nervous system (PNS)
