(PLEASE ANSWER QUICK) My brother wants to know if increasing his exercise will decrease the time it takes him to run the mile at school.
IV:
DV:

yea i would think that if he would exersise it would give more energy and muscle building up

Explanation:

hey there!

so, when you eat, your teeth chew and grind food into smaller pieces. this is mechanical digestion. then reactions aided by digestive enzymes break down large food molecules into smaller molecules. this is chemical digestion. the two processes change the food into simpler substances that can be used by the body for raw materials and energy.

hope this

tobey

the answer to your question is tooth decay.