Air Pollution

Which of these problems can be caused by air pollution?

• Respiratory problems
• Reduced food sources for humans
• Increased disease for humans
• Decrease in global temperatures

The ozone layer protects us from

• UV rays
• CFCs
• Increased atmospheric heat
• Decreased atmospheric heat

The ozone layer is damaged by

• CFCs
• Increase in greenhouse gases
• Increased global temperatures
• Sulfuric and nitric acids

Global warming is due to 

• Greenhouse gases
• Nitric and sulfuric acids
• CFCs
• Ozone depletion

Greenhouses gases

• Absorb and radiate heat
• Destroy the ozone layer
• Cause respiratory problems
• Create smog

Which of the following are greenhouse gases?

• Carbon dioxide

• Methane

• Water vapor

• Ozone

Greenhouse gases, in moderate amounts, keep the Earth's temperature stable

• True
• False

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

Dust, ash and pollen are examples of this air pollutant

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