ENVS Practice Exam 2

chapter 12 Which one of the following countries has the largest area of arable land? Select one: a. China b. Russia c. Brazil d. United States

d. United States

chapter 15 Which one of the following is not one of the purposes of pumping water through the core of a nuclear reactor fueled with uranium-235? Select one: a. prevent the fuel rods from overheating b. extract heat from the core c. slow neutrons d. control the rate of the chain reaction

d. control the rate of the chain reaction

chapter 13 Which one of the following kinds of pesticides is responsible for most pesticide poisonings of humans? Select one: a. carbamates b. pyrethroids c. chlorinated hydrocarbons d. organophosphates

d. organophosphates

chapter 14 Which one of the following countries accounts for the most oil imported by the United States? Select one: a. Canada b. Venezuela c. Mexico d. Saudi Arabia

a. Canada

chapter 10 Which of the following reasons explains why few farmers in the United States irrigate their crops via drip irrigation? Select one: a. Irrigation water is cheap, and initial installation costs are high b. Initial installation costs are high and crop yields are reduced c. Crop yields are reduced and the likelihood of salinization increases d. The likelihood of salinization increases, and irrigation water is cheap

a. Irrigation water is cheap, and initial installation costs are high

chapter 14 The top three primary sources of energy in the United States are Select one: a. Natural gas, coal, and oil b. Nuclear, natural gas, and coal c. Oil, nuclear, and natural gas d. Coal, oil, and nuclear

a. Natural gas, coal, and oil

chapter 9 : Which one of the following statements describes what happens when countries pass through the fertility transition? Select one: a. The dependency ratio decreases and then increases b. The dependency ratio decreases and remains low c. The dependency ratio increases and then decreases d. The dependency ratio increases and remains high

a. The dependency ratio decreases and then increases

chapter 10 Which one of the following contains the most liquid freshwater? Select one: a. aquifers b. wetlands c. lakes d. rivers

a. aquifers

chapter 6 : In the United States today, the principal use of mercury is Select one: a. dental fillings b. Thermometers and barometers c. Anti-fungicide coating on seed grain d. Catalyst for production of chlorine and sodium hydroxide

a. dental fillings

chapter 11 Which one of the following is the best soil for agriculture? Select one: a. mollisol b. oxisol c. alfisol d. aridisol

a. mollisol

chapter 14 Most electric power plants built in the United States since 2000 use which one of the following sources of energy? Select one: a. natural gas b. oil c. nuclear energy d. coal

a. natural gas

chapter 11 Which one of the following soils would you expect to find in a tropical rain forest? Select one: a. oxisol b. mollisol c. alfisol d. aridisol

a. oxisol

A:Terrestrial biomes are groups of ecosystems characterized by similar types of Select one: a. plants and climate b. carnivores and herbivores c. climate and carnivores d. herbivores and plants

a. plants and climate

chapter 13 Which one of the following insect pests has been eliminated from the United States by release of sterile males? Select one: a. screwworm flies b. Japanese beetles c. gypsy moths d. Hessian flies

a. screwworm flies

chapter 15 In a nuclear power plant fueled with uranium-235, what is the purpose of the moderator? Select one: a. slow neutrons b. shut down the reactor if there is a loss of cooling water c. maintain power output within a specified range d. prevent a runaway chain reaction

a. slow neutrons

chapter 13 Pheromones have not been used to control which one of the following pests? Select one: a. Boll weevil b. Cassava mealybug c. Tomato pinworm d. Coddling moth

b. Cassava mealybug

chapter 9 : Which one of the following is the major cause of mortality in the least developed countries of the world? Select one: a. Injuries b. Communicable diseases c. Cancer d. Cardiovascular diseases

b. Communicable diseases

chapter 15 Which of the following countries generates the greatest percentage of its electricity from nuclear power plants? Select one: a. Russia b. France c. USA d. China

b. France

chapter 11 Which of the following are two of the negative aspects of no-till agriculture? Select one: a. Requires use of herbicides and is restricted to perennial crops b. May increase the effects of pests that remain in crop residues and requires use of herbicides c. Is restricted to perennial crops and results in lower crop yields d. Results in lower crop yields and may increase the effects of pests that remain in crop residues

b. May increase the effects of pests that remain in crop residues and requires use of herbicides

chapter 16 The two countries that account for the greatest amount of ethanol production as a fuel are Select one: a. Cuba and China b. USA and Brazil c. USA and Cuba d. China and Brazil

b. USA and Brazil

chapter 16 Geothermal heat pumps Select one: a. can produce electricity using high-pressure steam to spin a steam turbine b. can be used to heat and cool buildings c. use geothermal heat to vaporize water to spin a steam turbine d. use geothermal heat to produce hydrogen gas from water

b. can be used to heat and cool buildings

chapter 16 Electricity produced by which one of the following is not an example of green power? Select one: a. wind b. natural gas c. geothermal d. solar

b. natural gas

chapter 14 The United States has extensive deposits of ________________ in Colorado, Texas, Utah, and Wyoming that, if exploited, could yield the equivalent of an estimated 800 billion barrels of oil. Select one: a. tar sands b. oil shale c. shale gas d. bitumen

b. oil shale

chapter 7 : Which of the following kinds of property rights are associated with the Tragedy of the Commons? Select one: a. private ownership b. open access c. communal ownership d. state ownership

b. open access

chapter 11 What is the principal reason that western rangelands in the United States produce less than half the livestock forage that they did in the early 19th century? Select one: a. overcultivation b. overgrazing c. overdrafting of aquifers d. failure to rotate crops

b. overgrazing

chapter 15 Which one of the following is the greatest source of exposure to radiation for people in the United States? Select one: a. cosmic radiation b. radon gas in average house c. continued fallout from nuclear testing d. natural radioactivity in the body

b. radon gas in average house

chapter 12 The three crops that account for the greatest areas of farmland devoted to the production of genetically modified (GM) crops do not include which one of the following? Select one: a. corn b. rice c. canola d. soybeans

b. rice

A:The amount of biomass on successive trophic levels in a food chain forms a pyramid in which the biomass on trophic level N+1 is only 20% of the biomass on trophic level N. If pesticide P is transferred from one trophic level to the next with 100% efficiency, what will be the concentration of P on trophic level 5 if the concentration of P on trophic level 2 is 4 parts per million (ppm)? Select one: a. 20 ppm b. 2500 ppm c. 500 ppm d. 100 ppm

c. 500 ppm

chapter 2 : The Montreal Protocol was an international agreement to phase out the production of Select one: a. DDT b. greenhouse gases c. Chlorofluorocarbons d. Neonicotinoid insecticides

c. Chlorofluorocarbons

chapter 9 : Which one of the following is not among the conditions conducive to small families? Select one: a. Social security system b. High cost of raising children c. Early age at marriage d. Educational opportunities for women

c. Early age at marriage

chapter 3 : Consider the following statements: (I) In any energy conversion, some of the usable energy is always lost (II) Energy is neither created nor destroyed, but it may be converted from one form to another, (III) Systems will go spontaneously in one direction only, toward increasing entropy. Which of these are statements of the second law of thermodynamics? Select one: a. I and II b. I, II, and III c. I and III d. II and III

c. I and III

chapter 4 : Which one of the following is not an example of resource partitioning? Select one: a. Several different bird species feed in different parts of the same trees b. Bats eat insects at night, and swallows eat insects during the day c. Male songbirds sing to defend their territory during the nesting season d. Wildflowers in temperate forests sprout in the early spring before the trees grow leaves to avoid competition with the trees for light

c. Male songbirds sing to defend their territory during the nesting season

chapter 8 : The fertility rate in Burkino Faso has exceeded the replacement rate for many years and is currently about 5.3. if the fertility rate were to suddenly drop to the replacement rate, why would the population of Burkino Faso continue to increase? Select one: a. Improved nutrition from genetically modified crops b. Immigration from neighboring countries c. Population momentum d. Recent dramatic improvements in health care

c. Population momentum

chapter 10 Which one of the following is not an example of blue water? Select one: a. Groundwater b. Lake Huron c. Rainwater taken up by plants d. The Mississippi River

c. Rainwater taken up by plants

chapter 8 : Which one of the following statements is not true? Select one: a. Since 1960, average income per capita has increased. b. Since 1960, life expectancy has increased. c. Since 1960, the percentage of people living in high-income countries has increased. d. Since 1960, infant mortality has decreased.

c. Since 1960, the percentage of people living in high-income countries has increased.

chapter 16 The forms of renewable energy that currently account for the greatest amount of electricity production in the world are Select one: a. Hydroelectric and solar photovoltaic b. Solar photovoltaic and biomass c. Wind and hydroelectric d. Wind and biomass

c. Wind and hydroelectric

chapter 12 Irrigated acreage currently accounts for Select one: a. less than half of all cropland but produces more than half of the world's food b. more than half of all cropland and produces more than half of the world's food c. less than half of all cropland and produces less than half of the world's food d. more than half of all cropland but produces less than half of the world's food

c. less than half of all cropland and produces less than half of the world's food

chapter 10 : If Earth rotated in the opposite direction, the Trade Winds in the northern hemisphere would blow from the Select one: a. southwest b. southeast c. northwest d. northeast

c. northwest

chapter 5 : In regions where various types of vegetation coexist and compete, periodic fires do not tip the balance in favor of Select one: a. redwood trees b. grasses c. oak trees d. pine trees

c. oak trees

chapter 12 A Bt crop is a genetically modified crop that is Select one: a. not adversely affected by certain herbicides b. resistant to the bacterium Bacillus thuringiensis c. resistant to many insect pests d. better than crops with the wild type genotype

c. resistant to many insect pests

chapter 8 : In hypothetical country A, everyone dies when they reach the age of 60. In hypothetical country B, which has a better health care system, everyone dies when they reach the age of 75. If the total population of both countries is stable, what percentage of the total population would you expect to be in the age group 32-46 years inclusive? Select one: a. 20% in country A and 25% in country B b. 15% in both countries c. 39% in both countries d. 25% in country A and 20% in country B

d. 25% in country A and 20% in country B

chapter 13 Which one of the following is not a technique used in integrated pest management? Select one: a. Planting of refuge crops b. Crop rotation c. Destruction of crop residues d. Cosmetic spraying

d. Cosmetic spraying

chapter 8 : Which one of the following is the correct order of these revolutions? Select one: a. Medical (first), green (second), industrial (third) b. Green (first), medical (second), Industrial (third) c. Green (first), industrial (second), Medical (third) d. Industrial (first), medical (second), green (third)

d. Industrial (first), medical (second), green (third)

A:Which one of the following is not one of the vital concepts that move societies toward a sustainable future? Select one: a. Sound science b. Sustainability c. Stewardship d. Security

d. Security

A:Global warming during the 21st century is expected to Select one: a. Speed up the hydrologic cycle and the thermohaline circulation of the ocean b. Slow the hydrologic cycle and speed up the thermohaline circulation of the ocean c. Slow the hydrologic cycle and the thermohaline circulation of the ocean d. Speed up the hydrologic cycle and slow the thermohaline circulation of the ocean

d. Speed up the hydrologic cycle and slow the thermohaline circulation of the ocean

A:Which one of the following statements is true? Select one: a. The fertility transition has preceded the epidemiologic transition b. The demographic transition has preceded the fertility transition c. The demographic transition has preceded the epidemiologic transition d. The epidemiologic transition has preceded the fertility transition

d. The epidemiologic transition has preceded the fertility transition

chapter 1 : The 1854 cholera outbreak near Broad Street in London came to an end when Select one: a. It became mandatory to boil water before drinking it b. Treatment of the public water supply was initiated c. Bottled water became available d. The handle was removed from the Broad Street pump

d. The handle was removed from the Broad Street pump

chapter 9 : Cabbages and Condoms is Select one: a. Two ways to minimize the likelihood of contracting HIV through casual sex b. A nonprofit with a goal of improving nutrition and reproductive health c. Two ways to avoid unwanted pregnancies d. The name of a restaurant chain in Thailand

d. The name of a restaurant chain in Thailand