Coal
From Wikipedia, a free encyclopedia written in simple English for easy reading.
Coal is a black solid fossil fuel. It is usually very hard. Coal is made of 65%-95% carbon. It also has hydrocarbons and some other compounds in it. It is formed from the remains of plants that may have lived millions of years ago.
Coal can be burned for energy or heat. About two-thirds of the coal mined today is burned in power stations to make electricity. Burning it is not as common as it used to be, because it causes much pollution.