Human impact on water

Reduce, reuse, recycle are the three R's of:

• Pollution
• Conservation
• Natural selection
• Population control

After a heavy rain, runoff is bringing water contaminated with fertilizers and pesticides to a river. This is an example of:

• Point-source pollution
• Nonpoint-source pollution

Dams are used to generate electricity from the flow of the water. How do dams have negative effects on the body of water in which they are built?

• Causes atmospheric pollution
• It creates radioactive material.
• It filters out minerals from the water.
• It restricts the movement of nutrients and organisms.

How could farmers negatively affect the local ecosystem?

• Using old equipment
• Fertilizing a field that runs off into a stream
• Sharing a field with a neighboring farmer
• Collecting his crop a week early

What is this picture showing?

• Niches
• Climate change
• Eutrophication
• Phototropism

What is the name of the pollutant where the source is unknown?

• Point Source
• Non-Point Source

Which of the following would be considered point source pollution:

• A pipe leak
• Agricultural runoff
• Pesticides

Of the following selections, which would be associated with point source pollution:

• From a single source
• From many sources
• Clean up is difficult

Which of the following is harder to clean up?

• Point source pollution
• non-point source pollution

Which of the following would be considered a non-point source pollution:

• A pipe leak
• Fertilizer runoff
• A gas leak from an underground tank