Human Impact on the Environment — Cumulative exam Answers

The image shows a group of fish.

White perch is a fish that is native to Atlantic coastal regions and is invasive to the Great Lakes. It feeds on native species and is thought to be the cause of the decline of the Great Lakes walleye fish populations. What was most likely its mode of introduction?

Which human activity is correctly paired with the greenhouse gas that it increases?

A group of sheep run in random directions to confuse a single predator. This is an example of which social behavior?