ENV100Y5 Chapter Notes - Chapter 11: Drainage Basin, Hydrosphere, Aquifer
69
ENV100Y5 Full Course Notes
Verified Note
69 documents
Document Summary
97. 5% of earth"s water is in oceans and too salty to drink or use to water crops. Only 2. 5% is fresh water: fresh water: water that is relatively pure, with few dissolved salts, most of the fresh water is in glaciers, ice caps, and underground aquifers. Water constantly moving among reservoirs shown via the hydrologic cycle. Earth"s hydrosphere is all of the water- salt or fresh, liquid, ice, or vapour- stored in surface water bodies and glaciers, the near subsurface, and underground. Water in atmosphere does not belong in hydrosphere but the two systems are closely linked. Atmosphere plays central role in the hydrologic cycle. As water moves hydrologic cycle, it: redistributes heat, erodes mountain ranges, builds river deltas, maintain ecosystem, supports living organisms shapes civilizations, gives rise to political conflicts. Use water at home for drinking, cooking, and cleaning. Farmers and ranchers use water for --> irrigate crops and water livestock. 70% of our annual freshwater --> agriculture.
