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 is the term for daily cycles of behavior, like the sleep-wake cycle? Answer: circadian rhythms

Answer: Circadian rhythms is the term for daily cycles of behavior, like the sleep-wake cycle.


Question: Question: Why do birds need a light-weight body? Answer: to stay aloft

Answer: Birds need a light-weight body for to stay aloft.


Question: Question: Experiments have shown that acceleration is exactly inversely proportional to mass, just as it is exactly linearly proportional to what? Answer: net external force

Answer:
Experiments have shown that acceleration is exactly inversely proportional to mass, just as it is exactly linearly proportional to the net external force.