What are fossil fuels?
Fossil fuels are the energy rich components of carbon which were made by the decomposition of plants and animals buried under the earth, long-long ago. For example petrol, and CNG gas and LPG gas.
Why are air, water and soil called natural resources?
Why are coal, petroleum and natural gas called fossil fuels?
Name the different varieties of coal found in nature.
Write the name of two natural substances.
