In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.
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Question: Question: What do you call sound that has a wave frequency higher than the human ear can detect? Answer: ultrasound

Answer: You call sound that has a wave frequency higher than the human ear can detect ultrasound.


Question: Question: What do muscles need to contract? Answer: stimulus

Answer: Muscles need stimulus to contract.


Question: Question: The two parameters used to measure changes in ecosystems are resistance and what related factor? Answer: resilience

Answer:
The two parameters used to measure changes in ecosystems are resistance and resilience.