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: As Kyle examines how longitudinal waves work, he notes that these particular waves have a small amount of amplitude. Kyle now knows that it means that the particles of these particular longitudinal waves are 
 Answer: farther apart
Example Output: The closer together the particles in a longitudinal wave are, the greater the amplitude.

Example Input: Question: Mike wants his voice to travel faster, so he will speak in a room that is 
 Answer: warmer
Example Output: For a given medium such as air, sound has a slower speed at lower temperatures.

Example Input: Question: John's town used to have little water, back when there were several thousand people. However, now that the town holds only a few hundred people, the water availability is 
 Answer: plentiful
Example Output:
Many of the worlds people live with water scarcity, and that percentage will increase as populations increase and climate changes.