Answer:
A.
Explanation:
just use your resources-..
Your dad is busy remodeling your basement. He accidentally drives a nail through his right hand with a nail gun. Therefore, you should call the police, asking for an ambulance immiedietly. If ye didn't get help, his hand might become amputated.
Answer:
The skin
Digestive tract
Vagina
Mucous membrane
Explanation:
The skin prevents microbes from entering the body
Digestive tract e.g. stomach acid is a natural defence mechanism
The vagina is acidic and this prevents harmful bacteria from growing with it's own flora.
Mucous membranes e.g. lining of the mouth, nose, eyelids are all defense mechanisms.
