Water Pollution Answers

The principle difference between point source and nonpoint source water pollution is _______.a.whether the pollution is organic or inorganicb.the number of sources of pollutionc.the amount of pollutiond.whether it is from commercial or agricultural sources

How does de-icing roads with salt negatively impact the environment?a.The road salt attracts deer that are then hit by motor vehicles.b.It removes necessary salt from the local water courses.c.The high salinity of the surface runoff is harmful to freshwater ecosystems.d.The salt harbors salt eating bacteria that are toxic to animals.

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Introduced sewage in water systems _______.a.decreases levels of phosphorus and nitrogenb.increases oxygen levelsc.increases concentrations of solidsd.leads to decreases in the temperature

Changing your toilet can reduce water pollution because _______.a.the sewage is partially treated in the toilet before entering the sewer systemb.chemicals added by new toilets neutralize the pathogens in the waterc.more efficient plumbing uses more water and creates larger volumes of wasted.more efficient plumbing uses less water and creates smaller volumes of waste

Which of the following factors determines how harmful an introduced chemical will be on the environment?a.type of chemicalb.concentrationc.weather conditionsd.all of the above

Surface runoff is an example of nonpoint source pollution.

Which of the following is not a cause of water pollution?a.jet fuelb.laundry soapc.ammoniad.none of the above

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

To be considered a source of water pollution, the source must include a chemical. Please select the best answer from the choices provided