Well, I'm not sure about how many cells we have, but the average human body makes about 259 billion red blood cells per day. (That's why I don't know). Also, there are about 200 different types of cells with about 20 different types of organelles.
Hope this helps!
Answer:
A,B,E
Explanation:
wash his hands after disposing of the remaining spinach
get an adequate amount of rest
contact his doctor if his fever goes above 101 degrees
Answer:
Triggered by an outside stimulus
Explanation:
I'm guessing A, the reduction of widespread disease.