Context: Fossil fuels are nonrenewable resources because they took millions of years to attain their present form.We use fossil fuels such as coal, oil, and gas to heat our houses, run industry, and transport. They are usually hydrocarbons (compounds of carbon and hydrogen). When they are burnt, they combine with oxygen from the air. The carbon becomes carbon dioxide; hydrogen becomes hydrogen oxide called water; while energy is released as heat. In the case of coal:Carbon + Oxygen      →→  carbon dioxide + heat energyHydrocarbon + Oxygen    →→   carbon dioxide + water + heat energy

Coal is a nonrenewable resource because ______.

Coal, petroleum, natural gas, and propane are fossil fuels. They are called fossil fuels because:

Choose one of the three fossil fuels – coal, oil or natural gas – and describe:how it was formedhow we use it as a source of energy

(Q015) Which of the following statements is true?Group of answer choicesFossil fuels store energy from the Earth's internal heat.Coal rank is based on the sulfur content of the coal.The most extensive deposits of coal occur in Carboniferous-age strata.Coal is considered a renewable resource because it's currently forming in swamps.

What makes an energy source a fossil fuels?