Go to the following web link- http://media.hhmi.org/biointeractive/click/trophiccascades/?_ga=2.71133017.874546303.1495559246-1279517233.1480957413
Complete the first slides of the introduction. Next, follow the first example of sea otters, and answer the following questions.
What does the otter eat? _________________
How does the consumption by the otter effect the growth of the Kelp forest?

Is this a direct or indirect effect? _________________
Is this a positive or negative effect? _________________
What happened to the kelp forest when the otter was hunted to near extinction?

Removal of the sea otter, a top predator also had an impact on two other species, the gull and the Eagle.
How did the gull diet change with the removal of the otter from the ecosystem?

How did the eagle diet change with the removal of the otter from the ecosystem?

Choose 1 of the case studies provided and write a summary of what happens when the top predator is present, including direct, indirect, positive and negative effects. Complete what happens when the top predator is removed.

The Anthropocene: Human Impact on the Environment
http://media.hhmi.org/biointeractive/click/anthropocene/
You may begin by clicking on each impact topic in the left vertical menu. A description of man’s influence or impact on each category is explained.
Next, hover around on the diagram itself, and click to see what changes will occur. After each click, a graph will show at the bottom of the screen. The more diagram clicks, the greater the number of human changes are added, and the more graphs show at the bottom.
Assignment:
Select 3 human impacts you are most interested in learning about.
List the following information for how each impact affects ecosystems:
a. Describe how the human impact you selected affects the ecosystem.
b. Summarize some of the quantitative (graph) data that provide evidence of humans’ impact on the ecosystem.
c. Describe specific types of evidence people should look for in their own ecosystem to determine whether humans are changing the local environment.
d. Describe what you can do as an individual to limit your impact.