When cities dumped sewage into natural waterways with limited capacity for dilution,
A) oxygen levels were severely lowered and most aquatic life died.
B) the extra organic matter fertilized the region, which quickly filled in with new plants.
C) the extra organic matter created fertile areas that attracted wildlife including migratory birds.
D) bacterial growth greatly increased and the sewage was safely recycled into soil.
A
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What are the effects of improvements in transportation?
A) promote spatial interaction B) stimulates specialization C) increases land and labor productivity D) promotes more efficient use of capital E) all of the above
The following is from Environmental Compliance in U.S. Agricultural Policy: Past Performance and Future Potential, by Roger Claassen, Vince Breneman, Shawn Bucholtz, Andrea Cattaneo, Robert Johansson, and Mitch Morehart, AER-832, USDA/ERS, June 2004.Since its inception in the 1930s, U.S. agricultural policy has been designed to support farmers' incomes while promoting soil conservation practices. By the 1970s, however, policymakers recognized that existing farm price and income support programs were not always consistent with soil conservation efforts. An unintended effect of these programs was to encourage producers to maintain or expand production of relatively erosive crops, such as row crops (corn, cotton, soybeans), sometimes on highly erosion-prone soils. At the same time, the
Government was helping farmers reduce soil erosion and related damages through conservation cost-sharing programs. Policymakers further recognized-aside from concerns about consistency-that farm program payments could be used as incentives to encourage better conservation behavior.What hypothesis is discussed in this passage? A. Incentive programs were having no effect on soil conservation. B. Incentive programs were encouraging soil conservation as intended. C. Incentive programs were not encouraging soil conservation as intended.
This graph, showing the effects of urbanization on streamflow over time, is an example of a
A) hydrological cycle. B) hydrograph. C) climograph. D) water budget.
If an area in the upper atmosphere is undergoing convergence, ____ is most likely occurring at Earth's surface below
a. convergence b. divergence c. rain d. a tornado e. fog