La biología (del griego «βίος» bios, vida, y «-λογία» -logía, tratado, estudio, ciencia) tiene como objeto de estudio a los seres vivos y, más específicamente, su origen, su evolución y sus propiedades: génesis,
1. Alternative energies like wind, solar, hydropower and biofuels are a necessity, but not enough. In January 2007, the International Energy Agency estimates that renewableenergy supplies only cover 13% of global energy consumption. The world also needs to reduce energy waste.
The most important of these is solar energy. With solar cells are taken and transformed intoelectricity. A system like the solar cells can be used for example in a common household, used as an energy source. Plants in various countries that can produce electricity connected to the grid.Although initially the cost to install the appropriate equipment for the use of solar energy can be more expensive than conventional power after a while the service becomes free.
Other examples ofalternative energy can be geothermal and wind energy. Geothermal energy is based on the specific heat of the earth's surface, whose temperature increases with depth. To exploit these resources injected waterto a certain depth, where it is heated and rises. Heat exchanger, the temperature increase can become electricity. We also found the energy produced by wind which is caused by temperature differencesin the atmosphere. Wind energy has always been exercised by man secondarily for navigation and local use in 1st windmills. Wind is an inexhaustible and pollution, but is spotty and battery storagesystem has been developed, but needs more perfectly
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Describe each source.
Wind energy is energy from wind, ie the kinetic energy generated by the effect of air currents, and istransformed into other useful forms of human activities.
Solar energy: the energy gained by capturing light and heat emitted by the Sun
Geothermal energy: is energy that can be obtained by utilizing theheat inside the Earth. The heat inside the earth is due to several factors, among which should be highlighted and gradient, heat Gene radio, etc. Geothermal comes from the Greek geo (earth), and...
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