Changing Waterways Answers

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Explain how thermohaline circulation is influenced by salinity and temperature.

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Thermohaline circulation _______.a.supplies heat to polar regionsb.causes salt lake formationc.causes oxbow lake formationd.is unaffected by heat fluctuations

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Buffer zones _______.a.can help regulate the acidity of aquatic ecosystemsb.help increase erosion ratesc.are set up around natural resource areasd.all of the above

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How can buffer strips have a positive impact on waterways?

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Explain how flooding affects rivers and how flooding can be influenced by human activity.

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How can alternative practices reduce human impact on waterways?

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Ocean and freshwater contamination _______.a.does not affect marine lifeb.is not affected by agriculturec.results from industrial activityd.is independent of human activity

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Explain how pollution affects marine life.

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Which of the following is not an effect of erosion on lakes?a.water leakageb.wearing away of sidesc.increased water levelsd.basin filling with sediment

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Which of the following statements about the effects of pollution on marine ecosystems is true? a. Burning fossil fuels causes a direct increase in the temperatures of ocean water. b. Burning fossil fuels causes a decrease in the pH of ocean water making it more acidic. c. Pollution in marine ecosystems causes a decrease in the formation of algal blooms. d. Addition of warm water has no effect on marine ecosystems. Please select the best answer from the choices provided

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