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.

Q: Question: Allen is riding his bike on a path. The course ends up 1000 feet lower above sea level compared to the beginning. At which point is the air resistance lower? 
 Answer: at the beginning

A: At higher elevations, there is less air to press on a given area.
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Q: Question: Fred found a longitudinal wave. The particles are getting further apart. The amplitude is 
 Answer: decreasing

A: The closer together the particles in a longitudinal wave are, the greater the amplitude.
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Q: Question: A small object displaces _____ water than a larger one. 
 Answer: less

A:
So more water is displaced by a bigger body than a smaller one.
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