A student heats a liquid on a burner. What happens to the portion of liquid that first begins to warm? It loses energy. It becomes less dense. It sinks downward. Its molecules get closer together. PLEASE HURRY

i think the answer would be reserve.

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.