Atmospheric pollutants

The idea

Burning fuels releases carbon dioxide, water vapour, carbon monoxide, sulfur dioxide, oxides of nitrogen and soot (particulates). Carbon monoxide is a toxic, colourless and odourless gas from incomplete combustion; it reduces the blood's capacity to carry oxygen. Sulfur dioxide and oxides of nitrogen cause respiratory problems and acid rain. Particulates cause global dimming and health problems.

1. Name the pollutant.
2. State its source.
3. State its effect.

Watch out Carbon monoxide comes from incomplete combustion; sulfur dioxide comes from sulfur impurities in fuels.