A major practice of sustainable agriculture is

A major practice of sustainable agriculture is 

A) agribusiness.
B) an increased "green revolution" use of chemicals.
C) the lack of integration of crops and livestock.
D) use of pesticide resistant seed.
E) limited use of chemicals


Answer: E. limited use of chemicals

In Maryland, soil preservationists produced a new composite map by combining in their GIS

In Maryland, soil preservationists produced a new composite map by combining in their GIS 

A) soil quality, environmental, and economic maps.
B) maps on soil quality and proximity to market.
C) dry harvest climate, wet harvest climate, climate change, and soil maps.
D) maps on habitat for endangered species.
E) soil quality, environmental, and political maps.


Answer: A. soil quality, environmental, and economic maps

The best way to block Asian carp from moving into the Great Lakes from the Illinois River would be the closing of locks and dams in and near Chicago; however, these waterways are not being closed because

The best way to block Asian carp from moving into the Great Lakes from the Illinois River would be the closing of locks and dams in and near Chicago; however, these waterways are not being closed because 

A) Republicans in the U.S. Congress are concerned about taxes on the rich.
B) as major transportation links for the region, they are important for the economy of St. Louis.
C) too many Asian carp are already clogging the locks and dams and cannot be removed.
D) as major transportation links for the region, they are important for Chicago's economy.
E) the economies of neighboring states depend on the Chicago-area locks and dams.


Answer: D. as major transportation links for the region, they are important for Chicago's economy

To increase crop yields, farmers in South China commonly practice

To increase crop yields, farmers in South China commonly practice 

A) double cropping.
B) transhumance.
C) threshing.
D) pastoral nomadism.
E) shifting cultivation.


Answer: A. double cropping