Exam 5: Economics, Policy, and Sustainable Development

In some areas, cattle on an open range may compact fragile soils while grazing. This can damage plant roots, leading to fewer, smaller plants, which may in turn cause cattle to graze more and work harder to obtain food. This is an example of a .

One of the conclusions that can be drawn from this scenario is that .

Once the prairie dogs were poisoned and no longer a part of the ecosystem, which of the following probably occurred?

Which of the following describes matter and energy flow in an ecosystem?

Which of the predators listed would seem to pose the least threat to cattle ranching?

The Haber -Bosch process allows farmers to .

The eutrophication that has taken place in Chesapeake Bay, the Gulf of Mexico, and other locations appears to be due to _.

In a previous chapter you read about "keystone species." How do the prairie dogs in this story meet the definition of a keystone species?

Nitrogen fixation is a process that makes nitrogen available to plants and is carried out by .