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.

Example Input: Question: Carter puts two rocks outside; one is a soft pebble, the other is a solid stone. A year later, he checks on the rocks. The solid stone is still there because it has a resistance that is
Answer: greater
Example Output: Different types of rocks weather at different rates. More resistant types of rocks will remain longer.

Example Input: Question: When there are fewer people in an area the amount of water will
Answer: increase
Example Output: The availability of water is projected to get worse as demand increases.

Example Input: Question: Ray analyzed the color of moths for a project. He notices that white moths produce more adult offspring than black ones. The white moth's traits will likely become _____ common over time.
Answer: more
Example Output:
Natural selection is the process by which living things with beneficial traits produce more offspring, so their traits become more common over time.