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.

[EX Q]: Question: A car that is very heavy will accelerate 
 Answer: slower
[EX A]: The greater the mass of an object, the less it will accelerate when a given force is applied.

[EX Q]: Question: Willard dug up a rock from near the surface, and realized it was _____. 
 Answer: young
[EX A]: Therefore, deeper rock layers must be older than layers closer to the surface.

[EX Q]: Question: Your pupils will _____ in size if you need more light to see. 
 Answer: increase
[EX A]:
The pupil automatically gets bigger or smaller to let more or less light in as needed.