What are the disadvantage of fossil fuels?

Explanation

Fossil fuels are formcd rom carbon and biomass which contains hydrogen, carbon, nitrogen and sulphur.
When these are burnt, the products are oxides of earbon, water, oxides of nitrogen and oxides of sulphur.
Oxides of nitrogen. oxides of sulphur and carhon monoxide are poisonous at high concentration. They may lcad to acid rain.
Carbon dioxide is a greenhouse gas. When its concentration in the atmosphere increases continuously, leads to intcnce global warming.