Sub-module 3A, page 7
Here is a graph of the decline in concentration with time for our lake example.
Now, we will try something a little new. When you hit the next hyperlink, you should get an Excel spread sheet, you should be able to get back here by using the back button. If by chance it opens in a new window, you should be able to get back here by closing that window. If you are using IE 5.0 and have Excel on your machine, you should not have any problems. If you are running this with Netscape - may the force be with you. Excel .