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1. Which of the following best characterizes the relationship between nations and their consumption of minerals?
Highly developed nations often rely on developing nations for strategically important minerals
The nations with the richest concentration of minerals consume the largest portion of minerals.
Highly developed nations consume a fair and proportionate share of the world's minerals.
As developing nations industrialize, their consumption of minerals decreases.

2. Ecosystem diversity is:
variety of interactions among organisms in natural communities
the number of different species in a given area.
the genetic variety within all populations of a given species.
synonymous with ecosystem services.

3. The continuous, low-level extinction of species that has occurred throughout the history of life on Earth is known as:
mass extinction.
evolution
background extinction
human impact extinction

4. Which of the following is an example of a species that was threatened historically due to overexploitation?
Guam Rail
American Bison
Nutria
Brown Tree Snake

5. Which of the following statements about tropical rain forests is false?
Approximately 1% of tropical rain forests are being cleared or degraded every decade.
Most species that live in tropical rain forests are endemic
The forest itself generates much of the rainfall in tropical rain forests
Tropical rain forests cover 7% of the Earth's surface and provide habitat for 50% of the Earth's species.

6. Park Service entrance fees bring in nearly $132 million dollars per year. It is estimated that the Park Service spends nearly 2.2 billion dollars a year on upgrades and park maintenance. What percentage of upgrades and maintenance is provided for by entrance fees?
16%
1.6%
0.06%
None of the above

7. What is the current percentage of land used by humans for agriculture?
42
55
31
38

8. Cities make up what percentage of the world's total land area?
5
17
3
12

9. Which of the following statements about forest ownership in the United States is true?
Federal government owns the majority of the forests
State and local governments own about 25% of the forests
Private individuals own the majority of the forests
Corporations own about half of the forests

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