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. :)
What? Is this a serious question?
Answer:
Increased use of large-mesh gill nets for harvesting salmon and trout
Explanation:
I have taken the quiz about 5 min ago hope this helps!