Environmental Science 1021F/G Chapter Notes - Chapter 15: Aquifer, Water Cycle, Transpiration
19 Dec 2013
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Document Summary
Wastewater: used and contaminated water that is released after use by households, industry, or agriculture. Water is one of the most ubiquitous, yet scarce, resources on earth. Up to 75% of the human body consists of water. Ocean water is too salty for human consumption and is toxic in large doses. Freshwater: water that has few dissolved ions such as salt. Nearly 80% of earth"s freshwater is trapped in ice caps at the poles and glaciers around the world. Wherever you see water, it is constantly moving through the environment through the water cycle. Water cycle (hydrologic cycle): the movement of water from gaseous to liquid states through various water compartments such as surface waters, soil, and living organisms. Heat from the sun causes water to evaporate from surface waters and land surfaces. Surface water: any body of water found above ground such as oceans, rivers, and lakes.
