Water pollution is:

The following items are part of the process of eutrophication. 1. Algae quickly reproduce, using up oxygen and blocking sunlight to underwater plants. 2. Bacteria consume excess wastes and nutrients, using up oxygen. 3. Underwater plants die. 4. Excess nutrients enter a body of water.What is the correct order for the process?

The riparian area of a lake or stream:

Fertilizer from your lawn and motor oil from the leaky oil pan on your car are examples of:

Biological pollution is:

A watershed includes:

A factory manufactures convenience foods such as frozen lasagna. Its wastes are filtered for large particulates and then fed into the local river. Why might this be a problem for the fish that live in the river?

The fish in your local lake or bay are rapidly declining in number. List the possible water problems, as discussed in the chapter, which might be causing the decline.

Compare and contrast three typical point source pollutants and three non-point source pollutants from the area where you live.

What are potential non-point sources of pathogens and drugs entering our waterways and what problems can these cause for people and other organisms?

As we saw in Chapter 6, in most natural ecosystems, nitrogen is a limiting factor for the growth of plants, and subsequently for the total biomass of plants and animals. How have humans changed this biogeochemical cycle?

You are investigating a die-off of fish in the local mountain lake, Lake Pleasant. It is fed by Hilltop Stream, and the Happy Valley River comes out of the lake and heads down toward Happy Valley. Do any of the following have something to do with the die-off? Justify your answers.
The new manufacturing plant just over the ridgetop in the next valley
The cattle feedlot on the edge of the Happy Valley River
The recent construction of a new subdivision on the eastern slopes above Lake Pleasant
The lovely older neighbourhood with wide lawns, a golf course, and a large grassy park on the western slope above the lake