8.1

Question 1

Point source pollutants

Answer 1

Pollutants that enter environment from easily identified and confined place
(You can point to it!)

Question 2

Non-point source pollutants

Answer 2

Pollutants entering environment from many places at once. Difficult to “point” to one individual source

Question 3

Point source examples

Answer 3

Animal waste runoff from a CAFO (N, fecal coliform bacteria)

Emissions from smokestack of a coal power plant (CO2, NOx, SO2, PM)

BP oil spill (hydrocarbons, benzene)

Question 4

Non-point source examples

Answer 4

Urban runoff (motor oil, nitrate fertilizer, road salt, sediment)

Pesticides sprayed on agricultural fields; carried by wind and washed off large agricultural regions into bodies of water

Question 5

Estuaries and bays…

Answer 5

Estuaries and bays are polluted by many nonpoint pollution sources from the large watersheds that empty into them