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environmental science unit 3 milestone

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Select the true statement about efforts to address water pollution in the United States.  The Clean Water Act of 1972 stated that all U.S. waterways would be clean by 1983.  The Refuse Act of 1899 was designed to protect waterways from non-point source pollution.  Media coverage of water pollution issues in the 1960s led to public concern and political action.  Individual states address non-point pollution sources by fining citizens for violations. CONCEPT Efforts to Address Water Pollution in the United States 2 Choose the statement that is NOT true about water availability on Earth.  Industry uses nearly as much water as agriculture does.  20% of the world’s population lives in an area where water is scarce.  Many major aquifers have a notable reduction in available water.  More than a billion people do not have ready access to clean water. CONCEPT Water Availability 3 Which of the following is an example of an organic agricultural practice?  Eliza adds earthworms to her garden to stimulate the formation of topsoil.  Sadie and her family practice no-till farming.  Rick alternates between grazing his livestock in several different pastures and giving them processed feed.  Bill uses only natural fertilizers and pesticides. CONCEPT Agriculture Impacts 4 Which of the examples below describes an effort to address urban sprawl through brownfield repair?  The site of a bankrupt cement factory is cleared and all hazardous substances disposed of.  Walking trails are built to connect neighborhoods with popular restaurants and shopping centers.  Private owners board up an abandoned building.  A flower garden is maintained in a empty lot downtown. CONCEPT Addressing Urban Sprawl 5 Which statement about agroecosystems is false?  The use of chemical fertilizers and pesticides degrades water quality.  Disrupted natural ecosystems lead to an increase in biodiversity.  Burning trees to clear land releases carbon dioxide, which increases global temperatures.  Nutrition loss in soil caused by erosion leads to the inability to grow crops. CONCEPT Agriculture Impacts 6 Which statement describes the environmental impact of developing countries?  They have limited buying power to import foods.  The standard of living in these countries requires five hectares per person.  They use the majority of the world’s fresh water supply.  These countries have an efficient food distribution system. CONCEPT Human Population Growth Agriculture Practices World Nutrition Water

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