Environmental Protection Agency (EPA)

Department of the Interior (DI)

Center for Disease Control (CDC)

United Nations (UN)

Air Quality Index - determines the amount of pollutants in your immediate area to see if there are any health risks

Average Quality Independent - determines the amount of pollutants in your immediate area to see if there are any health risks

Air Quality Intervention - determines what color the sunset will be

Safe for all

Unsafe for people in sensitive groups

Unhealthy for all people to spend a lot of time outside

Hazardous for anyone to be outside

safe for all people

safe except for people in sensitive groups

unhealthy for all people to spend a lot of time outside

hazardous for anyone to be outside

True

False

spraying pesticides on crops

burning fossil fuels for energy

dumping sewage in rivers

using Nuclear power stations

decay of leaves in a forest

acid rain kills fish in a lake

volcanic eruptions

bad weather

Water droplets

Allergens

Particulate matter

Combustibles

good for humans when near Earth's surface

a harmful pollutant no matter where it happens

found near Earth's surface all the time

protects Earth when high in the atmosphere, but is a pollutant near Earth's surface