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. :)
A the outfit you would wear to school
<em>I think the answer is D. They're linked to age-old efforts to use cut flowers and decorative plants in creative and expressive ways. I'm taking this exam right now.</em>