Chapter 20

Question 1

Point Source Water Pollution

Answer 1

Located at specific place, easy to identify, monitor/ regulate

Ex: drain dumping pollutants

Question 2

Non-point Source Pollution

Answer 2

Broad diffused, areas hard to identify, expensive clean up

Question 3

Eutrophication

Answer 3

Natural enrichment of shallow estuary, slow stream caused by runoff, sources: nitrates and phosphates from human sources treated lawns & farms

Question 4

Eight Major Water Pollutants and their Sources

Answer 4

1. Infectious Agents (bacteria)
2. Oxygen demanding Wastes
3. Plant Nutrients (NO3-)
4. Organic Chemicals (oil, gas, plastic)
5. Inorganic Chemicals (acids, based)
6. Sediments
7. Heavy Metals
8. Thermal Heat