vocabVersion en ligne hello par Kody Goebel 1 reservoir 2 runoff 3 watershed 4 groundwater 5 subsidence 6 surface water 7 point source 8 non-point source 9 bio-accumulation 10 water pollution a large natural or artificial lake used as a source of water supply. reservoir the draining away of water from the surface of an area of land, a building or structure, etc. runoff an area or ridge of land that separates waters flowing to different rivers, basins, or seas. water shed water held underground in the soil or in pores and crevices in rock. groundwater the gradual caving in or sinking of an area of land. subsidence water that collects on the surface of the ground. surface water a localized and stationary pollution source. point source a source of pollution that issues from widely distributed or pervasive environmental elements. non-point source Bioaccumulation is the accumulation of substances, such as pesticides, or other chemicals in an organism. bio-accumulation Water pollution is the contamination of water bodies, usually as a result of human activities. water pollution