Which of the following is causing widespread concern?
A) As atmospheric oxygen levels decline, the ozone layer is being destroyed.
B) As atmospheric carbon dioxide levels decline, the ozone layer is being destroyed.
C) As levels of methane decline, average global temperatures are increasing.
D) As levels of carbon dioxide increase, average global temperatures are increasing.
Question 2
Insecticides would be most useful in combating
A) mosquitoes that spread malaria.
B) weeds that infect our agricultural fields.
C) bacteria, such as Salmonella, which sometimes contaminate meat.
D) fungi that contribute to molds and mildew that lead to respiratory infections.
Effect of BPG on oxygen binding to hemoglobin. The BPG concentration
How Oxygen-16 Becomes More Concentrated in Glacial Ice
The Scientific Method and Atmospheric Science
Biodiversity at several levels
An overview of the levels of organization in nature
Partial pressures (in mm Hg) for oxygen (red boxes) and carbon dioxide (blue boxes) in the atmospher