We require various energy sources to work and live. These include solar, wind geothermal, biomass, as well as geothermal sources. In addition to being an important source of electricity they are also used for transportation and heating. These energy sources can emit greenhouse gases when they are burned to produce electricity. This creates the need for more sustainable energy sources.
Fossil fuels are the most widely used form of energy. They include oil, coal and natural gas. They were formed millions of years ago when prehistoric animals and plants died and were covered by layers of sedimentary rock. If the conditions were right the fossil fuels slowly transformed into carbon-rich materials which, when burned generate energy. These fossil fuels cannot be recycled since they will be exhausted in our lifetimes or in a number of lifetimes.
Renewable energy sources however are constantly replenished. The sun is the most important source of renewable energy, as it https://leonardogiombini.it/2019/02/14/interessante-articolo-sui-biocarburanti provides both light and heat. We use it for our homes as well as for businesses and automobiles. Wind is another renewable energy source, which generates electricity through spinning turbines. Since the first time people realized how to harness the wind and harness it, we have been using it for millennia. We use biological processes to produce alcohol (a clear, alcohol-like substance that can be used for fuel) from waste and crops.
Of all these sources hydropower is the biggest renewable energy source in the United States, though wind and biofuels are likely to be the next to take over. Hydropower makes use of the natural water cycle to harness water’s rapid flow, which is used to produce electricity.
