Understanding Global Warming Effects

What is the primary cause of the increase in global temperatures over the past 150,000 years according to the passage?

• Natural climate cycles

• Volcanic eruptions

• Solar activity

Which of the following is an indirect method used to estimate past temperatures?

• Thermometers

• Tree rings

• Satellites

• Weather balloons

What has been the approximate increase in global average temperature since 1880?

• 1°F

• 2°F

• 3°F

• 4°F

Which of the following is a predicted effect of global warming on sea levels by 2100?

• Sea levels will decrease by 0.1 to 0.9 meters

• Sea levels will remain the same

• Sea levels will rise by 0.1 to 0.9 meters

• Sea levels will rise by 2 to 3 meters

What is one of the six U.S. criteria air pollutants mentioned in the passage?

• Methane

• Sulfur dioxide

• Chlorofluorocarbons

• Radon

Which of the following is a consequence of increased precipitation due to global warming?

• Decreased soil erosion

• Increased flooding

• Reduced landslides

• Lower rainfall amounts

What is the effect of global warming on the geographic range of many plants, insects, and birds in the Northern Hemisphere?

• They have shifted southward

• They have shifted northward

• They have remained the same

• They have moved to lower altitudes

Which of the following is a primary pollutant that comes directly out of a smokestack or exhaust pipe?

• Ozone

• Carbon monoxide

• Nitric acid

• Sulfuric acid