Every day, the average adult breathes about 15,000 to 20,000 litres of air. Air is a mixture of gases that makes up our atmosphere and is vital to life on earth. Air pollution and greenhouse gas emissions harm our environment and pose a threat to our health.
A small portion of air pollution and greenhouse gas emissions comes from natural sources, such as forest fires, bogs and volcanic activity. Human activities, such as burning fossil fuels, using chemicals and industrial processes are the source of most air pollution.
Air pollution and greenhouse gases are the cause of smog, climate change and land and water contamination when pollutants fall in rain or snow.