Thermohaline circulation _______.a.supplies heat to polar regionsb.causes salt lake formationc.causes oxbow lake formationd.is unaffected by heat fluctuations
How can alternative practices reduce human impact on waterways?
Alternative practices such as no-till farming, cover crops, buffer strips, reduced chemical use, and wastewater treatment limit runoff, erosion, and pollutant loading into waterways.
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
Explain how thermohaline circulation is influenced by salinity and temperature.
Thermohaline circulation is driven by differences in water density caused by temperature and salinity. Colder, saltier water is denser, sinks, and flows along the ocean floor, while warmer, less-saline water rises, creating a global conveyor-belt circulation.
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
Explain how flooding affects rivers and how flooding can be influenced by human activity.
Flooding erodes riverbanks, deposits sediment, and can change a river’s course. Human activities such as deforestation, urbanization, and dam construction increase runoff and alter natural flow, raising flood risk.
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