Which of the following best explains the impact of climate change on polar regions?
Polar regions are warming more quickly than other regions because warming decreases the coverage of high-albedo ground cover like ice and snow.
Polar regions are warming more slowly than other regions because atmospheric circulation wind patterns trap cold air at the poles.
Polar regions are warming more slowly than other regions because the ice and snow keep the air cool.
Polar regions are warming more quickly than other regions because more carbon dioxide can dissolve in colder water.
Based on the data in the graph, which of the following values best indicates the change in the present-day CO2 concentration as compared to the CO2 concentration approximately 200,000 years ago?
1.6 times greater
2.3 times greater
250 times greater
400 times greater
Which of the following best describes the relationship between the variables shown in the graphs?
CO2 concentrations and Antarctic temperatures have steadily decreased from 800,000 years ago, and present-day values for both variables are the lowest they have been in 800,000 years.
CO2 concentrations and Antarctic temperatures have cycled approximately every 50,000 years, and the present-day value for CO2 concentration is the highest it has been in 800,000 years.
CO2 concentrations and Antarctic temperatures have cycled approximately every 50,000 years, and present-day values for both variables are the highest they have been in 800,000 years.
CO2 concentrations and Antarctic temperatures have steadily increased from 800,000 years ago, and the present-day value for CO2 concentration is the lowest it has been in 800,000 years.
Which of the following equations best represents the chemical changes that occur during ocean acidification?
CO2+H2O→2H++CO32−
CH4+2O2→CO2+2H2O
CO2+Ca++CO32−→CaCO3
6CO2+6H2O →C6H12O2+6O2
Which of the following solutions can best reduce an anthropogenic cause of ocean acidification?
Install catalytic converters on cars and trucks
Switch from coal-burning power plants to nuclear power plants for electricity generation
Use biomass for heating homes and for cooking
Rotate crops planted in agricultural fields each year