In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

Question: Gerald laid down many rock layers. The layers on the bottom level were likely laid
Answer: first
Lower rock layers were laid down earlier, so they are assumed to contain older fossils.

Question: If Milo starts rubbing two surfaces together quickly and then decrease the speed, what happens to the amount of energy produced?
Answer: decreases
Friction causes the molecules on rubbing surfaces to move faster, so they have more energy. This gives them a higher temperature, and they feel warmer.

Question: Gary had two rocks and pulled them further apart. The gravitational force between the rocks is now _____ strong.
Answer: less
The closer objects are to each other, the stronger the gravitational force between them.