Water Quality overview

If you find only pollution-tolerant macroinvertebrates in a steam, what does that indicate (show)?

• Fish ate all the pollution-sensitive macroinvertebrates

• The water quality of the stream has been degraded (made worse)

• You can drink the water

Tags

NGSS.MS-LS2-4

Why are people encouraged to limit the amount of Great Lakes fish consumed (eaten)?

• Not enough fishing space

• We need to leave enough fish for other predators to eat

• high probability of biomagnification of pollutants in those waters

Tags

NGSS.HS-LS2-7

____________ is when toxins build up as you move up the trophic levels. Generally organisms on the lower trophic levels live but apex organisms end up being affected as levels rise within the food chain.

• Eutrophication

• Biomagnification

• Bioaccumulation

• Food Web Stabilization

Check all that apply about macroinvertebrates (snails, clams, etc):

• They cycle nutrients in the water

• They help plants thrive

• They serve as the base for many food chains within the web

• They feed on algae and waste items within the ecosystem

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-2

Pollution that comes from a single source

• Point Source Pollution

• Non-Point Source Pollution

Tags

NGSS.MS-ESS3-3

Which region has the most unsafe drinking water?

• Region X

• Region Y

• Region Z

• Region Y and Z

Tags

NGSS.MS-LS2-4

2. What is Dissolved Oxygen?

• The amount of oxygen in the water.

• The clearness or cloudiness of the water.

• The amount of heat in the water.

• The acidity of the water.

Which of the following is the best example of a source of POINT POLLUTION?

• Pet owners leaving waste on the ground.

• Runoff from farms that brings animal waste into a stream.

• Home owners washing cars near a storm drain.

• A fabric company that pours extra dye into a nearby stream

Which of the following statements best explains why nonpoint pollution is so difficult to prevent?

• Because nonpoint pollution can be traced to only one source.

• Because the source of nonpoint pollution is difficult to identify.

• Because the source of nonpoint pollution may be a factory that can afford large fines.

• Because nonpoint pollution is mainly from high temperature, which is impossible for us to affect.

What is the end result of eutrophication?

• Algae growth

• Nitrates

• Decreased oxygen and death to organisms

• Increased dissolved oxygen

Tags

NGSS.MS-LS2-4