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Is the sleep-wake cycle is part of a biological clock?

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Yes, the sleep-wake cycle is a  part of a biological clock also referred to as circadian rhythms. Circadian rhythms are physical, mental, and behavioral changes that follow a daily cycle. They respond primarily to light and darkness in an organism's environment. Sleeping at night and being awake during the day is an example of a light-related circadian rhythm.

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Ritika Jonwal

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