Exam 9: Sustaining Biodiversity: Saving Ecosystems

Which country pays landowners to restore tree cover?

Areas especially rich in highly endangered species that are found nowhere else can be described as ____________________.

The zone of a biosphere reserve where there is little, if any, disturbance from human activities is the ____.

Explain how a buffer zone can be helpful in designing and managing nature reserves.

Sometimes, a human-made wetland may be created in order to help with sewage treatment or flooding. This is an example of _____.

Forest fires cause the seeds of some tree species to germinate.

Commercial forests have similar biodiversity to old-growth forests.

If another country wanted to follow the model of Costa Rica, it should find ways to give incentives to protect land rather than to develop it.

One way to restore biodiversity is to remove dams so that rivers can flow freely.

Through photosynthesis, forests remove CO₂from the atmosphere and store it in organic compounds, playing a role in the global ____________________ cycle.

Many prescription medications were developed using chemicals that were initially discovered in tropical forests.

A program called a debt-for-nature swap makes it financially attractive for countries to protect their tropical forests.

In 1996, federal wildlife officials reintroduced ____________________ to Yellowstone National Park.

Overfishing of smaller fish, such as sardines, is of particular concern because ____.

A(n) ____ is an extremely hot fire that leaps from treetop to treetop, burning whole trees.

Water evaporating from trees and vegetation in tropical rain forests has little effect on the amount of rainfall there.

A(n) ____________________ ____________________forest is a stand of trees that results from secondary ecological succession.

A plant called kenaf would help to reduce the pressure to cut trees because its fiber is very useful for ____.

Surface fires burn away flammable material such as dry brush, increasing the likelihood of more destructive fires.

Natural ecological restoration of riparian areas can happen if ____.