instruction:
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.
question:
Question: When a device become less efficient, its production of usable energy will go 
 Answer: down
answer:
The more efficient a device is, the greater the percentage of usable energy it produces.


question:
Question: Carla is pushing two carts down a street. One cart is heavy, the other is light. The heavy cart, compared to the light one, will accelerate 
 Answer: slowly
answer:
The greater the mass of an object, the less it will accelerate when a given force is applied.


question:
Question: When at the beach, Erin knows that there is a low amplitude, so the waves will be 
 Answer: smaller
answer:

The higher the crests of a wave are, the greater the amplitude.