1. How does human population growth differ from other species? A. Other species control their resources. B. Humans have control of all other species. C. Humans can consciously change their environment. D. Other species can improve their infant survival rate.

2. Which concept is a way of using natural resources without depleting them? A. desertification B. sustainable development C. the tragedy of commons D. integrated pest management

3. An island's starting population is 5,000 people. If 30 births and 50 deaths per thousand are reported this year, what is the population growth rate on the island? A. 8% B. 2% C. −2% D. −8%

4. Human population and industrial manufacturing plant numbers in the southeast have increased in the past 40 years. During this time, biologists report that evergreen trees atop Mt. Mitchell in western North Carolina died off. Which is the most probable reason for the decline in tree numbers? A. drought B. acid rain C. forest fires D. increased housing

5. Which is the best example of a sustainable practice that might be used in a garden? A. using pesticides B. watering frequently C. mixing a chemical fertilizer in the soil D. using ladybugs to control the aphid population

6. Which is the most abundant greenhouse gas in the Earth’s atmosphere? A. methane B. water vapor C. nitric oxide D. carbon dioxide

7. Which adverse effect has pesticides had on the environment? A. They decreased crop yields. B. They kept termites from destroying homes. C. They disrupted the breeding cycles of birds. D. They destroyed mosquitoes that cause malaria.

8. What role does the farming practice of no-till drilling play in the preservation of soil integrity? A. No-till drilling decreases the amount of organic material in the soil. B. No-till drilling reduces soil compaction and encourages increased root formation. C. No-till drilling uses old plant roots to hold the soil in place from season to season. D. No-till drilling removes old plant material in order to plant in a clean field the next season.

9. Humans have a direct impact on the recycling of carbon in the environment. What two human- driven processes have the greatest impact on the the recycling of carbon? A. human breathing and farming B. cutting down of forests and human breathing C. farming and the burning of fossil fuels D. the burning of fossil fuels and cutting down of forests

10. Which effect of global warming would create the most immediate concern to living organisms? A. oxygen levels in the air increasing B. carbon dioxide levels in the air decreasing C. polar ice caps melting and increasing ocean levels D. number of free-floating icebergs increasing significantly