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What does the term circadian rhythm refer to?

Correct answer B. Human body cycles

Explanation

Circadian rhythms are roughly 24-hour internal cycles, controlled by a clock in the hypothalamus, that regulate sleep, body temperature and hormone release.

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What does the term circadian rhythm refer to?

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What does the term circadian rhythm refer to?

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Earth is nearest the Sun each year in early , during the Northern Hemisphere winter, and farthest from it in early , during the northern summer. Which months complete this statement?