Practice questions 1-53 page Practice questions for the apes exam 1-53 set #1



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Practice questions 1-53 page

Practice questions for the APES Exam 1-53 SET #1

from Dan Hyke and other sources. revised April 2004

1. In which year is the population of the Earth expected to reach 12 billion if the growth rate remains at 1.4%?

a. 2025 b. 2050 c. 2100 d. 2150 e. 2200


2. When did the last Ice Age end?

a. 12,000 years ago b. 250,000 years ago

c. 500,000 years ago d. 1 million years ago e. 10 million years ago
3. Which of the following anthropogenic gases contributes most significantly to the greenhouse effect?

a. CH4 b. CFC’s c. N2O d. CO2 e. O3


4. How much of the Earth’s water is readily accessible for drinking?

a. <1% b. 2% c. 10%


5. Which of the following greenhouse gases is most efficient at trapping infrared heat?

a. CO2 b. CH4 c. N2O d. H2O e. CFC’s


6. What makes the greatest contribution to ocean level rising?

a. melting of the glaciers b . thermal expansion of water

c. breakdown of the polar ice caps d. increased river runoff

e. increased carbon dioxide absorption


7. The Montreal Protocol was enacted to do what?

a. reduce CFC’s in the atmosphere b. reduce acid rain

c. stop the trade in endangered species d. reduce CO2 emissions

e. slow world population growth


8. Which of the following animals is going extinct due to habitat destruction and fragmentation?

a. giant panda b. Great Auk c. zebra mussel d. bald eagle e. bison


9. In which soil horizon would you find humus?

a. A b. B c. C d. D e. O


10. What is the accepted average percent of energy that is transferred upwards to each trophic level?

a. 5% b. 10% c. 15% d. 20% e. 25%


11. Where is carbon most abundantly found on Earth?

a. in forests b. in atmosphere c. in Earth’s fauna d. in fossil fuel deposits e. ocean sediments


12. In which soil layer would you find fallen leaves?

a. A b. B c. C d. D e. O


13. In which soil layer would bacteria be decomposing organic material?

a. A b. B c. C d. D e. O


14. What is the ultimate source of energy on Earth?

a. solar energy b. photosynthesis c. fossil fuels d. autotrophic bacteria


15. Which of the following areas has the greatest level of net primary productivity?

a. grassland b. chaparral c. desert d. tundra e. estuary


16. Which continent has the highest human fertility rate?

a. South America b. Asia c. Africa d. Australia e. North America


17. Which continent has the largest population?

a. South America b. Asia c. Africa d. Australia e. North America

18. Which continent has the highest per capita resource use?

a. South America b. Asia c. Africa d. Australia e. North America


19. Which produces the greatest amount of solid waste?

a. urban areas b. mining operations c. manufacturing d. transportation e. agriculture


20. What is the main source of energy for developed countries?

a. fossil fuels b. geothermal c. hydro-electric d. solar e. nuclear


21. Which has an anthropogenic origin?

a. radon b. ozone c. methane d. chlorofluorocarbon e. argon


22. Over-grazing public land has the same effect as

a. overfishing b. oil depletion c. clear cutting d. open pit mining e. air pollution


23. Which federal law specifically prevents the transport of endangered species or their parts across state lines in USA?

a. Endangered Species Act b. Pelly Amendment c. Lacey Act d. Migratory Bird Act

e. International Whaling Commission
24. In which layer of the atmosphere does air pollution exist?

a. mesosphere b. stratosphere c. exosphere d. thermosphere e. troposphere


25. Which human activities lead to eutrophication?

a. agriculture and urban runoff b. strip mining c. waterway dredging

d. excessive rainfall e. habitat destruction
26. Which 3 crops provide the greatest amount of food for humans?

a. soybeans, millet, potatoes b. tomatoes, beans, rice

c. wheat, millet, soybeans d. corn, rice, wheat e. beans, corn, potatoes
Use these options to answer the next three questions

a. acorn => bear

b. acorn => insect => bear

c. acorn => insect => rodent => bear

d. acorn => insect => rodent => snake => bear

e. acorn => insect => rodent => snake => bird => bear


27. In which of the cases does the bear receive the greatest amount of energy from the acorn?
28. In which case would the bear be a tertiary consumer?
29. In which case does the bear receive the least amount of energy from the acorn?

30. Which generalization about developing countries is true?

a. They are highly industrialized

b. They have high average GNPs per person

c. They include the USA, Canada, Japan, and European countries

d. They make up about one-tenth of the world’s population

e. They use about one-tenth of the world’s resources
31. Which would you be likely to see in a developing country?

a . a higher percentage of the population with safe drinking water

b. more urban population

c. higher average life expectancy

d. higher percentage of the population under age 15

e. higher adult literacy


32. Which statement best illustrates the Tragedy of the Commons?

a. A factory pollutes a river as much as the law allows

b. Some levels of pollution are life threatening

c. Some activities harm the environment, but others do not.

d. Irrigated cropland can be ruined by salinization

e. People who walk on the commons ruin the grass
33. The Clean Air Act of 1990 mandated all of these except

a. Reduction of SOx emissions from coal-burning power plants by 50%

b. Allowing utility companies to purchase pollution credits

c. Reduction of NOx emissions from cars

d. Cessation of the production of CFCs and other chlorine chemicals

e. Reduction of CO2 emissions from all transportation vehicles


a. establish primary ambient air quality standards

b. increase the fuel-efficiency standards for cars and light trucks

c. doing too little to reduce emissions of greenhouse gases

d. relying primarily on pollution cleanup rather than on pollution prevention

e. failing to require stricter emission standards for fine particulates
34. The community knew the effects of Chemical X. They set a safe limit for its use. The community knew the effects of Chemical Z and set safe limits for its use. Unfortunately, both chemicals were released into the environment at their safe levels and there were massive fish die-offs. The most probable explanation was

a. homeostasis b. synergistic interaction c. Gaia reaction d. competitive exclusion e. chaos


35. Compared to the other natural sciences, environmental science focuses more on

a. reductionist thinking b. comparing experimental groups to control groups

c. connections and interactions d. isolating one variable for an experiment

e. the pieces than on the big picture


36. Positive feedback loops

a. accelerate change and go on infinitely b. accelerate change and are finite

c. slow down change and go on infinitely d. slow down change and are finite

e. are a figment of the president’s imagination


37. Most of the 9,000 lakes threatened by excess acidity in the USA are in

a. Northeast and upper Midwest b. Southeast and lower Midwest

c. Northwest and upper Midwest d. Southwest and lower Midwest

e. Mississippi River Valley


38. Chlorofluorocarbons are the primary cause of ozone depletion in which layer of the atmosphere?

a. stratosphere b. troposphere c. thermosphere d. tropopause e. stratopause


39. Which of these is not an environmental problem?

a. the salinization of the Central Valley of California

b. the creation of acid rain from fossil fuel burning power plants

c. vanishing species of plants and animals in national parks

d. the migration of the gray whales from Alaska to the shallow waters of Baja California

e. global climate change cause by increased levels of carbon dioxide


40. In an ecosystem, the way an organism “makes a living” or the way it gets its food and energy is called

a. ecocline b. habitat c. niche d. biome e. homebase


41. Which soil layer contains clay and leachates?

a. A horizon b. B horizon c. C horizon d. D horizon e. O horizon
42. Which atmospheric gas varies in different parts of the world?

a. carbon dioxide b. water vapor c. nitrogen d. oxygen e. argon


43. Which percent of species in the world are found in the rainforest?

a. 5% b. 10% c. 20% d. 30% e. more than 40%


44. How much of the incoming sunlight from the sun do plants absorb?

a. less than 1% b. 10% c. 50% d. 75% e. 90%


45. If a small fish species eat phytoplankton that have a DDT concentration of 0.04 ppm, what concentration will the small fish end up having?

a. 0.0004 ppm b. 0.004 ppm c. 0.04 ppm d. 0.4 ppm e. 4 ppm


46. Which is the most critical (important) species in an ecosystem?

a. indicator b. specialist c. generalist d. keystone e. threatened


47. ENSO is involved with what?

a. ozone depletion b. precipitation changes around the world

c. particulates in the air d. the trade in endangered species e. habitat loss
48. In which place was there an incident of mass poisoning through a leak of a pesticide?

a. Minamata, Japan b. Bhopal, India c. Valdez, Alaska

d. Love Canal, New York e. Yucca Mt, Nevada
49. Which place would demonstrate the effects of bioaccumulation in a food chain?

a. Minamata, Japan b. Bhopal, India c. Valdez, Alaska

d. Love Canal, New York e. Yucca Mt, Nevada
50. During the past century, the ocean has risen how high due to global warming?

a. 1 inch b. 2 inches c. 6 inches d. 10 inches e. 24 inches


51. There will be increased precipitation downwind from a major industrialized city because

a. of increased condensation nuclei in the air

b. of urban heat flowing into the surrounding atmosphere

c. urban buildings are not tall enough to create a substantial rain shadow effect

d. of evaporation of water from agricultural activities

e. the prevailing wind can pick up moisture from the impervious surfaces within the urban area


52. If a country has a 2% growth rate, how many years will it take to double its population?

a. 20 b. 25 c. 30 d. 35 e. 40


53. Which would be the most effective way to stop global warming?

a. decrease the amount of carbon dioxide that is being absorbed into the ocean

b. increase the amount of nitrous oxide in the atmosphere

c. increase the amount of volcanic aerosols in the atmosphere



d. decrease the amount of snow cover on Earth

e. increase the use of CFC’s

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