Diverse energy sources provide us with the energy we require to live and work. They include wind, solar, geothermal, and biomass sources. These sources aren’t only a major source for electricity, but they can also be used to heat or transport. The main challenge with these sources of energy is that they could cause greenhouse gas emissions if they are burned to generate electricity. This creates a need for more environmentally sustainable energy sources.
Fossil fuels are the most well-known form of energy. They include coal, oil and natural gas. They began to form millions of years ago when prehistoric animals and plants died and were buried under layers of sedimentary rock. After that, under the proper conditions, they gradually converted to carbon-rich substances which, when burned, generate energy. These fossil fuels are non-renewable because they will run out in our lifetimes or in a number of lifetimes.
Renewable energy sources are, however are continuously replenished. The primary renewable energy source is sunlight, which supplies warmth and light. We utilize it for our homes, businesses, and cars. Wind is renewable energy source that produces electricity through spinning turbines. We have been using it since people first discovered how to harvest the wind for millennia. In the end, we employ biological processes to create an ethanol (a clear alcohol that can be used as a fuel) from waste and crops.
Hydropower is the most important renewable energy source in the United States, but biofuels and wind will soon take over. Hydropower draws on nature’s hydro cycle to harness the power of fast-flowing water, which is then used for electricity generation.
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