Water pollution (pretest) – Flashcards

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

The principle difference between point source and nonpoint source water pollution is _______. a. whether the pollution is organic or inorganic b. the number of sources of pollution c. the amount of pollution d. whether it is from commercial or agricultural sources

Which of the following is true concerning sources of water pollution? a. Mine wastes and heavy metals become water pollution through storm water runoff. b. Biodegradable materials like food, wood, and leaves are not considered pollution. c. Petroleum byproducts and fuels end up as pollution principally from oil spills. d. Pesticides and herbicides do not commonly become water pollutants.

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

Using a broom to clean sidewalks and driveways is a way to reduce water pollution.

Which of the following is not a cause of water pollution? a. jet fuel b. laundry soap c. ammonia d. none of the above

Surface runoff is an example of nonpoint source pollution.

The toxic effects of water pollution are generally _______. a. immediate and long-lasting b. immediate and short-lived c. delayed and long-lasting d. delayed and short-lived

Which of the following is the most serious effect of water pollution for humans? a. infectious diseases b. algal blooms c. toxic food chain effects d. low-oxygen water

Point source pollution is much more difficult to track and clean up than nonpoint source pollution.