Dhaka, Nov. 28 -- The term "fossil fuel" refers to a natural fuel source that forms from the remains of living organisms. The substances which act as energy sources are known as fuels. The buried organic matters which can be converted to crude oil, coal, natural gas or any heavy oils by applying pressure and heat on earth's crust over hundreds of years are known as fossil fuels. Humans access fossil fuels today by drilling and mining into the earth to extract them from rocks and geologic formations.
According to the US Department of Energy, they supply nearly 90 percent of our energy. They are widely-used, easily accessible and even easier to transport. But, this dependency on fossil fuels is one of the major causes of climate change. Burn...