1. Air Pollution, Primary
Pollutants, & Secondary
Pollution

2. Air Pollution
• air pollution- the contamination of the
atmosphere by the introduction of
pollutants from human and natural
sources
o classified as primary or
secondary pollutants
• can cause death of many people
o burns people's lungs
• very common throughout the world

3. London's "Pea Souper"
Fog
• Occurred in 1952
• Killed thousands of people
• Caused major changes in air-
pollution laws