TASK DEFINITION: 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.
PROBLEM: Question: When there are fewer people in an area the amount of water will 
 Answer: increase

SOLUTION: The availability of water is projected to get worse as demand increases.

PROBLEM: Question: A piece of glass has _____ friction than a piece of sandpaper. 
 Answer: less

SOLUTION: Rougher surfaces have more friction between them than smoother surfaces.

PROBLEM: Question: Derek felt cold as he stood in the shade, and since his body was cooling down, he knew that his blood vessels in his skin were 
 Answer: contracting

SOLUTION:
When your brain senses that your body temperature is increasing, it sends messages to the blood vessels in the skin to increase in diameter.