Atmospheric pollution
by John Brennan
1. Fossil fuels
1.1. Coal
1.2. Oil
1.2.1. Carbon Particles
1.3. Gas
1.4. Power stations
1.4.1. CO2
1.4.1.1. Greenhouse effect
1.4.2. SO2
1.4.2.1. Acid Rain
1.5. Cars
1.5.1. NOX
1.5.1.1. Causes smog
1.5.1.2. Causes Asthma.