Web39




BIO190 : The Class : Web Assignment 39

Web Assignment 39

To complete this assignment successfully, you should:

Read the assignment carefully
Complete the activity as outlined below
Open and study the links
Complete the search as outlined

Chapters 39 and 40 are about ecological topics. The Department of Biological Sciences offers a
couse in Ecology (Biology 226). If you would like more information, contact the Biology Advisement Office at 520-523-9304. Several biology faculty members teach this course during the year.

Learning on the Web

Please note that these questions require you to “uncover” the all or part of the answer using information from the World Wide Web.

1. Using Figure 39-2, compare the temperature curve and the atmospheric carbon dioxide concentration of the earth. Make a prediction about the trends of these two curves. 1 point.

2. Do a search on the web and find peer-reviewed articles to substantiate the graph in Figure 39-2. 1 point.

3. The tundra biome has been called a “cold desert.” How can this be? Find a web site about tundra. Give the address of the web site and answer the following questions in one paragraph. What environmental conditions are described. What plant life is there? What animal life is there? 5 points.

4. Estuaries are referred to as “nurseries of the sea.” Why? Give four examples of organisms that use estuaries as “nurseries” to support your response. 2 points.

5. Find a web site which discusses reasons that estuaries are becoming endangered. Please submit the address of the site. 1 point.

For grading purposes, please provide the following information:

Your Name:
Your Email address:

Once you have filled in all of the areas above, click the Send the assignment button below to send the assignment to the instructor.

E-mail Sylvester Allred at Syl.Allred@nau.edu