Despite widespread use of insecticides and herbicides, infestations of insects, plant pathogens, and weeds currently, depending on the type of crop, cause a loss of about
A) 0 to 5% of potential agricultural production in the United States.
B) 20% to 50% of potential agricultural production in the United States.
C) 50% to 80% of potential agricultural production in the United States.
D) more than 95% of potential agricultural production in the United States.
B
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Which of the following are advantages of animal feedlots?
A. increased meat production, higher profits, and reduced soil erosion B. higher profits, less overcrowding, and reduced overgrazing C. reduced overgrazing, greenhouse gas emissions, and higher profits D. increased genetic resistance in humans, increased meat production, and higher profits E. reduced soil erosion, less overcrowding, and increased genetic resistance in humans
Globally, the three largest earthquakes took place in Japan in 1960, San Francisco in 1964, and Chile in 2004
Indicate whether the statement is true or false.
The region's unpredictable politics and poor economic conditions have led to this migration pattern
A) eastward expansion into Siberia B) movement into southern Russia for agricultural opportunities C) young, well-educated populations leaving Russia for other countries D) Jewish populations within Russia returning to Russian cities from Israel and the U.S.
If you move from the equator to a location in the mid-latitudes, the wintertime average temperature will _____ and the temperature range will _____.
A) decrease; increase B) decrease; decrease C) increase; increase D) decrease; stay the same E) increase; decrease