Which of the following is NOT one of the three important developments in the industrialization of agriculture?
A) the development of industrial substitutes for agricultural products
B) the introduction of agrochemicals, biotechnologies, fertilizers, and hybrid seeds
C) increased focus on the family farm as the centerpiece of agricultural production
D) changes in rural labor activities
Answer: C
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Under the Law of Diminishing Marginal Utility, what factor limits our ability to rise from Utility line 1 to Utility line 2?
A) the economy B) our credit C) our income D) our conscience E) our access to information
Explain the surface and upper circulation components of Hadley cells, and specify how they are related
What will be an ideal response?
Which of the following is NOT among the reasons why world cities are typically targets of terrorism?
A) The perpetrators and their groups are not from urban areas B) The symbolic value — prestige is associated with penetrating sites of power. C) The impact value — targeting urban infrastructure has the potential to be much more destructive. D) The political and social reverberations are greatest and have the potential to spread the most fear.
A home located about 500 feet from an abandoned landfill explodes in a giant ball of flames. This is a mystery, as the home only uses electricity for cooking and heating the home. Most likely, this disaster was caused by
A) groundwater contamination from the landfill into the home. B) biogas that seeped from the landfill along horizontal cracks and into the home. C) gasoline or other flammable substances that leached from the landfill into the home. D) corrosives that leached from the landfill into the home and degraded the home's electrical wires.