keeping in mind their availability in nature explain the need of using coal and petroleum judiciously
Answers
We know that coal and petroleum are fossil fuels.It required the dead organisms millions of years to get converted into these fuels.On the other hand the known reserves of these will last only a few hundred years.Hence they should be used judiciously to ensure their availability for a longer period of time.
Some alternative sources of energy are wind energy,solar energy and thermal energy.
★ NEED OF USING COAL ARE ––––»
Coal is readily combustion black sedimentary rock which is used for cooking food in rural areas , generating electricity , for :----- making "Chimneys" (brick factories) coal is also one of the largest source of carbon dioxide (Co2) emmision however but coal produces a lot of smoke and is a foul - smelling gas which also causes " Air pollution. "
★ NEED OF USING PETROLEUM ARE ––––»
Peteroleum is a dark coloured viscous foul smelling liquid also called as crude oil it's name is derived from latin word 'petra' (rock) and 'oleum' (oil) which is used for :----- lubricants transportation , heating and lightening , etc.