Problem 3
How did outgassing affect the composition of the Hadean atmosphere?
Problem 4
What process first began producing oxygen about 2.7 billion years ago? Why did the oxygen concentration remain low for 300 million years?
Problem 6
How did banded iron formation form? How did the deposition of banded iron formation affect the atmosphere?
Problem 9
Draw a graph of the change in pressure with altitude. Explain why the pressure changes as you have shown.
Problem 12
Discuss the air pollution disaster in Donora. What pollutants were involved? Where did they come from? How did they become concentrated?
Problem 18
Discuss the production, dispersal, and health effects of dioxin.
Problem 19
What is an aerosol? Briefly discuss the health effects of aerosols.
Problem 20
Explain how CFCs deplete the ozone layer.
