ENST200 Lecture Notes - Lecture 17: Anemia, Biomagnification, Cholera
31 Jan 2013
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Human usage: withdrawal total amount of water removed from a river, lake or aquifer for any purpose. In 2025, humans would have consumed 70%-90% of available surface water: raises two questions: 1) how much water is available and 2) what is the quality of available reliable water. Globally, there is a very low amount of fresh water available. 2. 6% of all available water is fresh water and only 0. 14% is readily accessible water. Some areas of the planet lack a good amount of water (less than 1700 cubic meters/year/person) (e. g. usa, africa, and lower asia). Canada has 20% of all freshwater in the world: some world"s problems: Some areas have a lot of water but the largest rivers are far from agricultural and population centres. It is very expensive to transport to where it is needed. Lot of precipitation arrives during short periods which cannot and stored because it is very expensive.
