Why does the government not do more to regulate nonpoint source pollution?
a.
nonpoint source pollution is less harmful to the environment, so it does not need to be regulated.
b.
point source pollution is more common than nonpoint source pollution, so it is more regulated.
c.
nonpoint source pollution is caused solely by animals, which are not possible to regulate.
d.
nonpoint source pollution is difficult to regulate, because its source is difficult to track.

D

Explanation:

i got it right on the quiz and got 100%

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.