Examlex
What unit of measurement is used to describe extraordinary large distances, such as the distance of other stars from our own?
Nutrient Molecules
Essential compounds absorbed by the body to provide energy, support growth, and maintain and repair body tissues.
Energy Production
The biological processes by which cells convert nutrients into usable energy, primarily through respiration and metabolism.
Oxygen
A chemical element with symbol O, essential for aerobic respiration in living organisms and a key component of the Earth's atmosphere.
Vitamin
One of a group of organic substances present in minute amounts in natural foodstuffs that are essential to normal metabolism; insufficient amounts in the diet may cause deficiency diseases.
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