Question

give reason: coal ,petroleum and natural gas are called fossil fuels.

Answer 1

Hey,

Coal, petroleum and natural gas are called fossil fuel because they are formed by the decomposition of dead remains of organisms by the natural process of fossilisation.  

HOPE IT HELPS:-))

Answer 2

Coil , Petroleum and gas are called fossil fuels because they have been formed from the fosilized remains of prehistoric plants and animals ..