Unit Test — Unit test Answers

A strategy to reduce, reuse, and recycle would improve ocean health by _______.a.removing marine debris from the oceansb.reducing the amount of garbage available to enter the oceanc.removing garbage from landfillsd.increasing the rate of plankton growth

It is best to say that efficient plumbing _______.a.reduces water pollution by using less waterb.reduces water pollution by using cleaner waterc.increases water pollution by using more waterd.reduces water pollution by using dirty water

Access to potable water is most heavily limited by _______.a.moneyb.precipitationc.raw water suppliesd.climate

It is best to say that marine debris _______.a.is a hazard to marine animalsb.degrading ocean healthc.a pervasive, global pollution problemd.all of the above

Which of the following sources of pollution would be the most difficult to track and regulate?a.lawn fertilizer runoffb.a waste treatment plantc.a factoryd.a nuclear power plant

Freshwater is used principally as drinking water.

Which of the following is not an option for solving the world water crisis?a.desalinationb.finding new sources of freshwaterc.reducing overconsumptiond.wastewater treatment plants

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

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.

Potable water delivery systems are characterized by _______.a.high infrastructure costsb.aqueductsc.glass bottlesd.rivers

Which of the following practices could help reduce erosion of water banks?a.buffer stripsb.natural fertilizers and pesticidesc.decrease in fossil fuel emissionsd.all of the above

Which of the following best defines sustainable fishing practices?a.Harvesting practices that maximize yields and profits.b.Harvesting practices that maximize the yield per fisherman.c.Harvesting practices that do not reduce the potential for future harvests.d.Harvesting practices that reduce the potential for future harvests.

Which of the following regulations is the primary law regarding water pollution?a.The Safe Drinking Water Actb.The Clean Water Actc.The Marine Protection, Research, and Sanctuaries Actd.WaterSense

The Karez well system _______.a.was the first known use of wellsb.was a postindustrial systemc.transported groundwater from a distanced.all of the above

Ocean water is sometimes referred to as saline water as it contains significant concentrations of dissolved salts. Please select the best answer from the choices provided

Which of the following is not a possible consequence of animals ingesting marine debris?a.injuryb.starvationc.suffocationd.malnutrition