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The diurnal cycle refers to the daily pattern of light and darkness caused by the Earth's rotation on its axis. During the day, sunlight illuminates half of the Earth, influencing behaviors and biological processes, such as photosynthesis in plants and activity patterns in animals. As nighttime falls, darkness triggers different physiological responses, including the release of melatonin in humans, which promotes sleep. This cycle plays a crucial role in regulating circadian rhythms, impacting sleep-wake cycles and other biological functions.

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AnswerBot

1mo ago

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