Hydrosphere And Water Resources Unit Test 96%

Which of the following regulations is the primary law regarding water pollution? a. The Safe Drinking Water Act b. The Clean Water Act c. The Marine Protection, Research, and Sanctuaries Act d. WaterSense

Human activity on land can have a profound influence on marine ecosystems.

Which of the following is not an option for solving the world water crisis? a. desalination b. finding new sources of freshwater c. reducing overconsumption d. wastewater treatment plants

What is the greatest use of groundwater? a. drinking b. industry c. agriculture d. recreation

Which of the following statements about desalination is true? a. Desalination is less expensive than water reclamation. b. Desalination uses large amounts of energy. c. Desalination is the main process used to provide water for crop irrigation. d. All of the above

Where is the water table located? a. 10 ft below the surface b. below the saturated zone c. at the top of the saturated zone d. all of the above

Which of the following is true of salt lakes? a. The water flowing in to salt lakes comes directly from the ocean. b. Salt lakes are formed when river bends are cut off. c. The water flowing in to salt lakes contains minerals. d. Salt lakes do not experience shrinking due to erosion.

Invasive species often unbalance the ecosystems into which they are introduced because _______. a. they did not co-evolve with the natural species and lack natural controls, like predators b. they breed quickly and have the potential to overpopulate an area c. they consume local resources d. none of the above

Potable water delivery systems are characterized by _______. a. high infrastructure costs b. aqueducts c. glass bottles d. rivers

Which of the following best describes the effects of water pollution on aquatic ecosystems? a. It can result in fish kills and restrictions on human consumption. b. It can change the physiology of fish. c. It can cause long-term alterations of aquatic ecosystems. d. All of the above

Which of the following sources of pollution would be the most difficult to track and regulate? a. lawn fertilizer runoff b. a waste treatment plant c. a factory d. a nuclear power plant

Which of the following is an effect of fossil fuel emission on oceans? a. decreased pH b. decreased carbonate concentrations c. increased CO2 absorption d. all of the above

Ships that use ballast water are not in danger of introducing invasive species into aquatic habitats.

Water intoxication occurs when _______. a. the body's electrolytes are out of balance b. a person has a high body mass c. in people engaged in low-impact activities d. all of the above

Which of the following is not true about nonnative species? a. They can have positive impacts on an ecosystem. b. They can have negative impacts on an ecosystem. c. They can be introduced within their natural range. d. A nonnative species can be an invasive species.

Nonnative species are only introduced unintentionally.

Which of the following is an example of mechanical control of nonnative species? a. pesticides b. herbicides c. net barriers d. inspections

Why has the spread of the herbicide-resistant hydrilla through Florida's waterways resulted in them no longer being navigable by most boats? a. Thy hydrilla has induced a drought that drained the waterways. b. The weed clogs propellers that boats use for propulsion. c. The sticky leaves of the weed hold boats in place. d. All of the above

It is best to say that efficient plumbing _______. a. reduces water pollution by using less water b. reduces water pollution by using cleaner water c. increases water pollution by using more water d. reduces water pollution by using dirty water

Which of the following is not an example of mechanical control of nonnative species? a. pulling b. inspections c. net barriers d. mowing

Access to potable water is most heavily limited by _______. a. money b. precipitation c. raw water supplies d. climate

Freshwater is used principally as drinking water.

The Karez well system _______. a. was the first known use of wells b. was a postindustrial system c. transported groundwater from a distance d. all of the above

Which of the following practices could help reduce erosion of water banks? a. buffer strips b. natural fertilizers and pesticides c. decrease in fossil fuel emissions d. all of the above

Which of the following is not a way that nonnative organisms are introduced to new aquatic ecosystems related to commerce? a. cargo ship hulls b. recreational boats c. escape from aquariums d. migration