front 1 Ground water | back 1 Water that moves down into the ground (due to gravity) passes between particles of soil, sand, gravel, or rock until it reaches a depth where the ground is filled, or saturated, with water. |
front 2 Pollution | back 2 The presence in or introduction into the environment of a substance or thing that has harmful or poisonous effects. |
front 3 Desalination | back 3 A process that takes away salt and mineral components from saltwater |
front 4 Salt water | back 4 Water (as of the ocean) that naturally contains a significant amount of salt |
front 5 Freshwater | back 5 Bogs, ponds, lakes, rivers, streams, and any other bodies of water bodies that consist of freshwater |
front 6 Frozen freshwater | back 6 Freshwater that is not easily accessible due to being frozen in glaciers and ice caps. (Water locked up in ice and snow) |