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: John was looking at sunscreen at the retail store. He noticed that sunscreens that had higher SPF would offer protection that is 
 Answer: Longer
Example Output: A sunscreen with a higher SPF protects the skin longer.

Example Input: Question: If Mona is putting together a new crib and she wants to have a harder time screwing the pieces together, what should she look for in a screw? 
 Answer: farther threads
Example Output: Therefore, if the threads on a screw are closer together, you need to apply less force to penetrate the wood or other object.

Example Input: Question: If Jim lowers the temperature of the air inside his balloon, will his balloon rise higher into the air or sink towards the ground? 
 Answer: sink lower
Example Output:
Warm air is less dense than cool air, so it rises higher in the troposphere.