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- Where does your drinking water come from? An aquifer or an aboveground reservoir? What area is included within your watershed? Visit the Science in Your Watershed site at http://water.usgs.gov/wsc to find out.Green roofs should be mainly supported because: a. they are visually pleasingb. they are easy to maintainc. they consist of native plant speciesd. they absorb harmful pollutantYou are a commercial developer, and you were asked to develop a golf course on what is presently forested land next to a reservoir used for city water. Describe the impacts this development might have on water quality in the reservoir. (HINT: think of pollution from clearing the land as well as growing grass for the golf course)
- Which water loss that can be prevented by a Contour walls b Planting wind breaksWhich of the following is inconsistent with the idea of making rural areas more sustainable? restoration and maintenance of wetlands to lessen runoff and alleviate flooding increasing use of extensive irrigation techniques to nurture demanding crops planting of trees next to land used for agriculture to break the wind and protect the soil from erosion planting of native grasses to rebuild the soil use of cover crops to stabilize the soil between growing seasonsDescribe how economics might affect landowner decisions to implement erosion control.
- Depending on the type of environment that runoff travels through, the water may pick up beneficial or hazardous things. Describe an environment in which something is added to the water that has a positive effect on the watershed, then describe another environment in which something is added to the water that has a negative effect on the watershed.Which of the following is a point source of pollution? a runoff from multiple large agricultural fields that carries chemicals like fertilizers and pesticides b sewer overflow of untreated waste c runoff from multiple farms pollutes a small lake d runoff that carries oil and spilled chemicals off interstate highwaysUrban forests, green roofs, parks, and other green spaces can improve environmental conditions for city dwellers in a number of ways. (g) In addition to improving air quality and reducing energy usage in cities, increasing the amount of vegetation can decrease urban runoff. Describe one way increasing the amount of vegetation in cities can lead to decreased runoff. (h) Describe one cultural benefit that may result from increasing the amount of vegetation in cities.
- Explain(in terms of biological or chemical impacts on aquatic ecosystems) why plant nutrients usually are the worst kinds of water pollutants. The term B.O.D. should be part of your answer.Thelargest reservoir of phosphorus in most ecosystems is phosphorus:a. inthe atmosphere.b.dissolved in water.c. inrocks and sediments.d.bound in animal tissues.e.bound in plant tissues.Cities can be susceptible to flooding because ____. a. there are more trees to take up water b. they are usually built in closed depressions with no outlet for water c. rainfall is greatly increased over cities d. they are rarely built near rivers that can carry the water away e. buildings and paved surfaces increase runoff and can overload storm drains