| A | B |
|---|
| zooplankton | the group of small organisms that include protozoa, and larvae of crustaceans, worms, mollusks, and cnidarians, that drift with the ocean currents |
| wind turbines | modern windmills used for the purpose of generating elelctricity |
| wetlands | areas that are damp or wet for most of the year that are a narural control for flooding and home to numerous organisms |
| water table | the uppersurface or level of groundwater that changes its level according to season and amount of rain an area receives |
| wetlands | their water table is at or near the surface of topsoil |
| watershed | the total sum all the land will drain directly or indirectly a body of water such as a stream |
| water logging | occurs when water completely saturates the soil |
| water logging | when water saturates the land surrounding root systems depriving the plant of oxygen and causing fungal growth that damages or kills the plant |
| water holding capacity | the ability of soil to hold water so that is is available to plants |
| waste-to-energy | the use of solid wastes as fue to generate electricity |
| VOCs | these chemicals vaporize into the air |
| VOCs | gasoline, paint solvents, cleaning agents; associated with photochemical smog |
| urban sprawl | rapid growth of araes surrounding the inner city, that spreads out housing, shopping, and businesses |
| urban blight | the wasting away of the inner city when city dwellwrs move to suburbs, lowering the tax base and causing a reduction in services within the city |
| upwelling | occurs in the oceans where diverging currents and offshore winds cause water from depths to raise to the surface bring lots of nutrients to the surface; attracts a great number of fish |
| ultraviolet radiation | has a shorter wavelength than visible light, causes damage to living tissue |
| turbogenerator | a turbine that drives an electric generator |
