Air pollution

1
Air pollution

• When there are harmful substances in the air
• Particles or gases
• Can occur naturally or from human activity

2
Air pollution

• Natural sources
• Salt spray
• Mold and pollen
• Ash from forest fires
• Soil erosion
• Dust storms
• Volcanoes

3
Air pollution

• Artificial sources
• Factories
• Farming
• Construction
• Power plants
• Vehicles
• Aerosol cans

4
Air pollution

• Health Consequences
• Allergies
• Coughs
• Lung/heart disease
• Headaches
• Irritated eyes, nose, throat

5
Air pollution

• Environmental Consequences
• Smog
• Brown haze formed from interaction of pollutants
  and sun
• Acid Rain
• Formed when pollutants mix with water in air
• Can damage plants, lakes, buildings

6
Effects of Acid Rain
7
Air pollution

• Solutions
• Reduce pollutants produced by humans
• Governments pass laws requiring special devices
  which reduce pollution
• Expensive but necessary