Unit 4 lesson 3

This is the contamination of air by harmful substances including gases and smoke.

• acid precipitaion

• particulate matter

• photochemical smog

• air pollution

This is precipitation that has a than that of normal rainwater (pH 5.6).

• urbanization

• particulate matter

• acid precipitation

• photochemical smog

This is air pollution that forms from the interaction between chemicals in the air and sunlight.

• particulate matter

• photochemical smog

• acid precipitation

• air pollution

This is the mix of both solid and liquid particles in the air.

• particulate matter

• photochemical smog

• air pollution

• urbanization

This is the development of towns and cities on previously natural areas.

• acid precipitation

• pariticulate matter

• air pollution

• urbanization