8.1

• point source: pollutant that enters environment from an easily identified and confined place

  • Animal waste runoff from CAFO
  • Emissions from smokestack of a coal power plant
• non-point source: pollutants entering the environment from many places at one

  • urban runoff
  • pesticides sprayed on agricultural fields; carried by wind/washed off large agricultural regions into bodies of water
  • estuaries & bays from the large watersheds that empty into them
• Pollutants: specific chemicals/groups of chemicals from specific sources with specific environmental and human health effects
• Pollution: vague, nondescript term for any substances that is harmful to the environment