The human brain has up to 100 billion neurons (nerve cells)
Answer:
1) CFC
2) acid rain
3) the greenhouse effect
4) smog
5) Carbon Monoxide
6) Air pollution
I THINK THESE ARE THE ANSWERS
SORRY IF IT IS WRONG!
Answer:
It will be endorphins
Explanation:
any of a group of hormones secreted within the brain and nervous system and having a number of physiological functions. They are peptides which activate the body's opiate receptors, causing an analgesic effect.
Explanation:
The muscles opposing the movement become the antagonists.
In a movement, like the back extension, the muscles that extend the back are the agonist.
The muscles that produce the opposite movement, which is back flexion, are the abdominals.
Well actually it depends if they are talking so I could talk on the phone and if they are getting to work they could drive
