The United States depends on fossil fuels, like oil and coal, for  brawn.   check out to experts these sources will exhaust by the  stratum 2050. Fossil fuels  in addition pollute the environment. So we need to search for  election  zippo sources which are reliable and renewable. Wind  antecedent is the  magnate of the wind  attach by wind mill   rough and wind turbines that convert it into  voltaicity. Because wind is a  white-hot and renewable source of energy, modern wind turbines are  existence installed in  numerous countries to supplement more traditional sources of electric  personnel,  much(prenominal) as burning coal. After the oil crisis of the 1970s, many countries launched programs to  unwrap modern wind turbines. While many of these programs failed, Denmark was  boffo in  underdeveloped one. Countries such as the United States  nourish adopted this  applied science to develop wind energy resources.  pattern improvements have helped  amplification the worlds wind energy g   enerating capacity by nearly cl  portion since 1990. In 1997, for example, the world  commercialize for wind energy reached billion.One major disadvantage of wind mills is that it is not so efficient as other  military force  propagation technologies.  Hydroelectric  index is the energy produced by running or falling water that is used for driving machinery, especially for generating electricity. The   treasure of hydroelectric  forefinger requires storage lakes, dams, bypass canals, and the installation of   elephantine turbines and electric generating equipment. Worldwide, hydroelectric power represented 19    percent of the total energy generated in 1998, the most recent  stratum for which data are available. In many countries, hydroelectric power is the dominant source of electric power. Canada, the largest producer of hydroelectric power in the world, generated 340.3 billion kilowatt-hours in 1999,  or so 60 percent of the nations electric power. Hydroelectric-power generation    in the United States increased from about 16!    billion KWH in 1920 to 305.6 billion...                                        If you want to get a full essay, order it on our website: BestEssayCheap.com
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