bfbefeqhbcq Flashcards
a large natural or artificial lake used as a source of water supply.
a large natural or artificial lake used as a source of water supply.
a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river.
river
an underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials (gravel, sand, or silt) from which groundwater can be extracted using a water well.
aquifer
a substance or energy introduced into the environment that has undesired effects, or adversely affects the usefulness of a resource.
pollutant
any single identifiable source of pollution from which pollutants are discharged, such as a pipe, ditch, ship or factory smokestack
point source pollution
unlike pollution from industrial and sewage treatment plants, pollution that comes from many diffuse sources. Pollution that is caused by rainfall or snowmelt moving over and through the ground
non-point source pollution
a rapid increase or accumulation in the population of algae (typically microscopic) in a water system
algal bloom
a phenomenon that occurs in aquatic environments as dissolved oxygen (DO) becomes reduced in concentration to a point where it becomes detrimental to aquatic organisms living in the system
oxygen depletion
a natural process that results from accumulation of nutrients in lakes or other bodies of water. Algae that feed on nutrients grow into unsightly scum on the water surface, decreasing recreational value and clogging water-intake pipes.
eutrophication
a broad term that includes any form of precipitation with acidic components, such as sulfuric or nitric acid that fall to the ground from the atmosphere in wet or dry forms. This can include rain, snow, fog, hail or even dust that is acidic.
acid rain
