| A | B |
|---|
| Hydro | of, pertaining to, or furnishing water, water power, or hydroelectricity |
| Evaporation | the act or process of evaporating |
| Condensation | the act or process of reducing a gas or vapor to a liquid or solid form |
| Precipitation | falling products of condensation in the atmosphere, as rain, snow, or hail |
| Barometer | any instrument that measures atmospheric pressure |
| Relative humidity | the amount of water vapor in the air, expressed as a percentage of the maximum amount that the air could hold at the given temperature; the ratio of the actual water vapor pressure to the saturation vapor pressure |
| Pollutants | any substance, as certain chemicals or waste products, that renders the air, soil, water, or other natural resource harmful or unsuitable for a specific purpose |
| Biotic | pertaining to life |
| Abiotic | of or characterized by the absence of life or living organisms |
| Ground water | the water beneath the surface of the ground, consisting largely of surface water that has seeped down |
| Runoff | something that drains or flows off, as rain that flows off from the land in streams |
| Aquifer | any geological formation containing or conducting ground water, esp. one that supplies the water for wells, springs, etc |
| Infiltration | the seepage of water into soil or rock |
| Eutrophication | characterized by an abundant accumulation of nutrients that support a dense growth of algae and other organisms, the decay of which depletes the shallow waters of oxygen in summer |
