Anion
Anion: In the fields of chemistry and geochemistry, an anion is a negatively charged ion. The oppositely charged ion is a cation.
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Terrestrial Planet Definition
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Trench Dam
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Water Table
Water Table Water Table: In the hydrogeology branch of geology, the water table represents the surface of an unconfined groundwater aquifer, where the hydraulic pressure is equal to atmospheric pressure. Additionally, a water table is present in a perched groundwater zone. Although, there is no water table in a confined aquifer.
Polychlorinated Biphenyl (PCBs)
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Seismology
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Runoff (R)
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