Unit Test — Unit test Answers

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

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.

The presence of organic material in soil makes it more productive for plant growth.

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

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

Where is the carbon taken in by plants during photosynthesis stored?a.the groundb.plant structuresc.the aird.all of the above

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.

The urban migration trend has stopped worldwide.

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

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

Foresters work for private companies as well as government agencies.

Which of the following is a way that trees have been negatively impacted by human use?a.deforestationb.pollutionc.reductiond.all of the above

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

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 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.

Which of the following could be found on either public or private land?a.state parkb.single-family residencec.mined.factory