By S C Bhatia
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A simple comparison is a coal mine and a forest. While the forest could be depleted, if it is managed it represents a continuous supply of energy, vs. the coal mine, which once has been Energy resources and their utilisation 13 exhausted is gone. Most of earth’s available energy resources are renewable resources. Renewable resources account for more than 93 per cent of total US energy reserves. Annual renewable resources were multiplied times thirty years for comparison with non-renewable resources.
Geothermal and biomass are the only two renewable energy sources that require careful management to avoid local depletion. 2 per cent of the world’s energy. 7 Alternative energy paths Denmark and Germany have started to make investments in solar energy, despite their unfavourable geographic locations. Germany is now the largest consumer of photovoltaic cells in the world. Denmark and Germany have installed 3 GW and 17 GW of wind power respectively. 5 per cent of all the electricity in Denmark. Brazil invests in ethanol production from sugar cane, which is now a significant part of the transportation fuel in that country.
Each of these lines plays an important role in the geometrical relationship between the earth and the sun: 1. Arctic circle: 66° 33′ 39′′ N. 2. Tropic of Cancer: 23° 26′ 21′′ N. 3. Equator: 0° Latitude. 4. Tropic of Capricorn: 23° 26′ 21′′ S. 5. Antarctic Circle: 66° 33′ 39′′ S. Effect of latitude: A region’s latitude has a great effect on its climate and weather. Latitude more loosely determines prevailing winds, and other physical characteristics of geographic locations. Auroral activity is common at Solar radiations 37 high geomagnetic latitudes.