Or Adenosine Triphosphate, a chemical that plays a vital role in metabolism.
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A gas that belongs to the alkane series of hydrocarbons.
The theory that the continents move around the planet.
Water that fills spaces in porous rocks, sediments and soil, below the level of the water table.
Musical tones that are whole number multiples of the note intended.
A fluid-filled compartment inside a cell, surrounded by a membrane.