Time4Learning offers an interactive online science curriculum as part of its online education program. The materials are presented using a combination of multimedia lessons, instructional videos, printable worksheets, quizzes, tests and both online and offline projects.
 Coal is formed from plant life buried in the Earth millions of years ago. Like Petroleum and natural gas, it is a carbon-based fossil fuel.  Coal is called a fossil fuel b â¦ ecause it was formed from the remains of vegetation that grew as long ago as 400 million years.
Coal is a flammable black hard rock used as a solid fossil fuel. It is mainly made up of 65-95% carbon and also contains hydrogen, sulphur, oxygen and nitrogen and also dead plants animals and may contain human coal turns hard and shiny after hundreds and thousands of years .