Question

why do we say that burning of fules can cause health hazards

Answer 1

Due to release of certain amount of carbon monoxide and other harmful gases it is not advisable to burn the fuels

Answer 2

buning fuels such as petrol and Diesel cause a lot of threats to us. they release carbon monoxide after combustion process . the problem with carbon monoxide is it is also an earth eating gas . they destroy the ozone layer in statosphere and after the depletion of ozone the dangerous uv(ultraviolet rays) enter into earth