P represents heating and Q represent cooling.
this is because when you start from a liquid and turn to a gas the particles move faster making them farther apart, causing a gas. the opposite happens when you go from a liquid to a solid. the partials move closer together causing a solid to form. :)
I think it should be the second choice
Answer:
a
Explanation:
high level of lead in drinking water could lead to neurological
They both combine to make a new cell
