Changing Waterways Answers

Which of the following methods would help decrease marine pollution?a.government regulation of agricultureb.government regulation of industryc.reduction in chemical used.all of the above

How is thermohaline circulation influenced by salinity and temperature? a. It is driven by density gradients, which are affected by salinity and temperature, with cold water and water with higher salt concentrations being more dense. b. It is driven by density gradients, which are affected by salinity and temperature, with warm water and water with higher salt concentrations being more dense. c. It is driven by density gradients, which are affected by salinity and temperature, with warm water and water with lower salt concentrations being more dense. d. It is driven by density gradients, which are affected by salinity and temperature, with cold water and water with lower salt concentrations being more dense. Please select the best answer from the choices provided

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

How does pollution affect marine life?a.Pollution causes a decrease in phytoplankton populations and therefore a decrease in the occurrence of algal blooms.b.Pollution causes destruction of coral reefs, which are important sources of shelter and breeding for marine animals.c.Soaps, detergents, and plastics in the ocean decrease the acidity of ocean water, leading to a decrease in carbonate levels.d.Pollution affects organisms close to the shoreline, but does not affect marine organisms far from the shore.

Recreational activities can cause an increase in erosion rates.

The majority of the debris found in the garbage patch is _______.a.large plastic bottlesb.sewagec.trash from landfillsd.small pieces of plastic

How does the loss of vegetation on shore lines affect waterways?a.decreased sedimentationb.increased shorelinesc.increased erosion of water banksd.none of the above

Increased awareness of water contamination can help reduce its effects.

How is an oxbow lake formed?a.An oxbow lake is formed when a lake shrinks due to erosion.b.An oxbow lake is formed when the wide bend of a river is cut off.c.An oxbow lake is formed when high concentrations of salt are present in lakes.d.An oxbow lake is formed when a dam or levee is built on a river.

How can alternative practices lead to a reduced impact on waterways?a.Alternative practices will completely eliminate changes to waterways.b.Alternative practices can completely reverse the damage already done to waterways.c.Alternative practices will allow industry greater access to waterways.d.Alternative practices can lead to a decrease in pollution, erosion, and damage to waterways.