BIO SCI 55 Lecture 11: Bio Sci lecture 11
8 Nov 2016
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Extensive areas with less than 15 inches of rainfall. Note how much of west has less than 15 inches. Precipitation caused by the lifting of moist air over a mountain barrier. Note dramatic difference between windward anad leeward side of mountain: how much the vegetation would inrease as you go higher. Ascending air: loses temp, and ability to hold water. Descending air: increases temp, and abilitu to hold water: result: striking vegatational differe nces od different sides of mountains. Colombia river basin: 183 million/ acre feet of water. Colorado river basin: 12-16 million acre/ feet of water. Constuction began- 1937 (federal: major features. 8 hydro power plants: est cost: 11 billion. Top 5 u. s. agricultureal states: 1. Top 5 farm products in california: 1. Farm exports from state: 15 billion a year, more than half to paficic rim. The cow state : one of every 8 cows in the country live in ca. 15 billion pounds of fruits and nuts.
