Begin by naming some common respiratory diseases. Find web sites that provide information about these ailments.

What triggers these illnesses? What proportion of people in your age group suffer from these illnesses?

What kinds of changes occur in the lungs of people who suffer from these diseases? Which of the factors that influence the rate of diffusion (listed on the introductory page of this module) are affected by these changes?

How are these illnesses treated?

Hint:

Find general information web sites that promote public awareness of the various common respiratory ailments. For example, you might want to look at the Asthma and Allergy Foundation of America site at http://www.aafa.org