How might environmental manipulation of a crop have unexpected consequences?a.The new crop may require more water than the original.b.The crop may harm the environment.c.The yield may be reduced.d.All of the above
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The principal characteristic that differentiates temperate and tropical rainforests is __________.a.latitudeb.oxygen turn overc.the continent they are ond.longitude
Which of the following could be found on either public or private land?a.state parkb.single-family residencec.mined.factory
Pesticides are best described as _______.a.polluting chemicals toxic to all living thingsb.chemicals that destroy 33% of the world’s potential food supplyc.toxic chemicals used to control weed populationsd.toxic chemicals used to control pest populations
How is over-irrigation damaging to soil?a.It reduces the amount of organic material in soil.b.It results in the accumulation of salt near the soil surface.c.It increases the acidity of soil.d.It removes water from the water table.
Which of the following best describes what led to London’s “killer fog” in 1952?a.Pollution from the air contaminated the water supply which is what killed people.b.Millions of coal fires and stagnant air caused toxic fumes to build up in the air.c.Poor city design led to faulty ventilation in houses.d.Soot from forest and wildfires in the surrounding areas blew over the city.
Permafrost (gelisol) is considered a hearty, robust soil type.
Cities that have available space in surrounding areas, such as Los Angeles, are likely to experience upward growth rather than urban sprawl.
Which of the following methods of agriculture is the most reliant upon technology and automation?a.rangeland grazingb.American agriculturec.traditional rice cultivationd.Dutch agriculture
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Which of the following is the most direct method for combating rainforest deforestation? a. ecotourism b. carbon credits c. rehabilitation d. education Please select the best answer from the choices provided
Which of the following is a way that minerals are used? a. industry b. construction c. technology d. all of the above Please select the best answer from the choices provided
Which of the following is not true concerning cover crops?a.they prevent soil erosionb.they can fix nitrogen in soilc.they are sold as cash cropsd.they add organic matter to soil
Which of the following is not a reason that humans genetically engineer trees?a.insect resistanceb.pharmaceutical productionc.faster growthd.none of the above
Trees maintain the balance between gases in the air, removing carbon dioxide from the air and releasing oxygen.
How does mining affect local populations?a.Mining is a vital part of the economy of surrounding towns.b.Mining introduces pollution into local water supplies.c.Mining disrupts local populations of flora and fauna.d.All of the above are true.
Rainforest deforestation is contributing to _______.a.a decline in global biodiversityb.the reduction of greenhouse gasesc.increased soil moistured.increased drug discoveries
The urban migration trend has stopped worldwide.
Soil fertility is best described as being dependent upon _______.a.the balance between organic matter and mineral nutrientsb.soil color and the local climatec.topography and the local climated.soil texture
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