Examlex
Outdated aspirin can have an acidic odor.
Darkness
The absence of light in an environment, affecting visibility and perception.
Circadian Rhythms
Biological processes that display an endogenous, entrainable oscillation of about 24 hours.
Earth's Rotation
The spinning of the Earth on its axis, which takes approximately 24 hours to complete, resulting in day and night.
Organisms
Any living biological entities, such as plants, animals, fungi, or microorganisms.
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