| A | B |
|---|
| Atmosphere | A layer of gases surrounding Earth. It protects us from the intense heat of sun during the day and from freezing temperatures at night |
| Fossil fuels | Coal, oil and natural gases that when burnt, release gases into the atmosphere |
| Ozone | A gas with a blue colour and a strong smell. It irritates your airways and eyes and damages your lungs |
| Pollutants | any substance that is released into the atmosphere other than the naturally existing gases |
| Particulate matter | Tiny particles that are made up of dust, soil, salt or other chemicals. It can get into your lungs and cause damage |
| Sulphur dioxide | A gas that is colourless but has a strong smell. It irritates your eyes and lungs |
| Nitrogen dioxide | A gas with a reddish brown colour and a strong smell. It makes breathing difficult, causes chest pain and damages your lungs |
| Carbon monoxide | A gas that is colourless and odourless. It is poisonous and can cause death |
