A colorless, odorless gas

• Nitrogen oxides
• Ground-level ozone
• Carbon monoxide
• Sulfur dioxide

A metallic element that can cause brain damage

• Lead
• Particulate matter
• Ground-level ozone
• Nitrogen oxides

Can damage crops by preventing plants from carrying out photosynthesis

• Lead
• Nitrogen oxides
• Sulfur dioxide
• Particulate matter

Combines with hydrocarbons and sunlight to form ozone

• Nitrogen oxides
• Carbon monoxide
• Lead
• Sulfur dioxide

Dust, ash and pollen are examples of this air pollutant

• Lead
• Ground-level ozone
• Particulate matter
• Nitrogen oxides

Is formed when nitrogen oxides, VOCs and sunlight interact

• Ground-level ozone
• Particulate matter
• Lead
• Sulfur dioxide

Can cause hyperactivity and blindness in children

• Ground-level ozone
• Particulate matter
• Sulfur dioxide
• Lead

Combines with other pollutants to form acid rain

• Nitrogen oxides & sulfur dioxide
• Particulate matter & lead
• Nitrogen oxides & ground-level ozone
• Sulfur dioxide & ground-level ozone

Causes you to have a headache

• Sulfur dioxides
• Carbon monoxide
• Nitrogen oxide

Reduces the amount of oxygen that red blood cells can carry

• Nitrogen oxides
• Carbon monoxide
• Sulfur dioxide
• Ground-level ozone