Carbon dioxide

Carbon monoxide

Nitrogen dioxide

sulphur trioxide

These are formed from the degradation of biomass.

It takes millions of years for the formation of fossil fuels.

Fossil fuels will be exhausted in the future.

Fossil fuels do not cause pollution.

Using LED bulb instead of halogen bulb

Using private vehicle instead of public transport

Using solar energy instead of electricity

Using sweater instead of heater