Examlex
Which hormone causes the kidneys to retain sodium and to excrete potassium?
Buoyancy
The force that causes objects to float in a fluid by displacing a volume of fluid whose weight equals the object's weight.
Adaptation
The process by which organisms become better suited to their environment through genetic changes over generations.
Gravity
The natural force of attraction exerted by a celestial body, such as Earth, upon objects, drawing them toward its center.
Animal Movement
The various motions accomplished by animals as a result of muscle contraction.
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