Examlex
The human appendix is an example of a(n)________ structure.
Seasonal Affective Disorder
A type of depression that occurs at a specific time of year, usually in the winter, when there is less natural sunlight.
Depression
A common and serious mood disorder that causes persistent feelings of sadness and loss of interest.
Winter
The coldest season of the year in polar and temperate climates, characterized by short days, long nights, and typically featuring snow, ice, and freezing temperatures.
Biological Clock
An internal mechanism in organisms that controls the cycle of biological processes and behaviors in a roughly 24-hour cycle, known as the circadian rhythm.
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