All of about is the answer
A neutron has no charge
<em>NEUT</em>RAL = NONE
well thats how I remember it anyway
SO ITS NUMBER 2
The Nervous System and The Endocrine System.
It effects the environment because it can cause unstability in the food web and biotic and abiotic factors
Cigarette smoking decreases speed in track runner, due to the fact that their lungs have black spots. Making it harder for them to breathe. And harder to breathe causing slowing in speed.