1-6: Nitrogen Cycle, Sulfur Cycle; Tropospheric Ozone

1-6: En Español 1-6: Em Português

Importance of this Unit to the Course

This unit provides basic information on oxides of nitrogen and sulfur and ozone in the lower atmosphere that will be needed for understanding why some but not all chemicals contribute to global warming, ozone depletion, and acid rain covered in future units.


Preparation for Discussion (You must complete this section before class.)

  1. Read the summary information. (Print text for offline revies; images only.)
  2. Take the Quiz over the summary information. (see your portfolio)
  3. Review additional reading material (this material is not covered in the quiz, but offers more ideas for online discussion)

Discussion (online / face-to-face) (See your portfolio for due dates and times)

A major component of the course is participation in the online dialog. The following types of comments are required:

The following may be used as discussion starters for the online dialog:

Additional Reading