(Optional) Analyze water samples for chemical pollutants and organisms.

Analysis may include

  • phosphorus
  • nitrates
  • dissolved oxygen
  • temperature
  • pH
  • organisms
    • macroinvertebrates
    • arthropods
    • bacteria
    • protozoa
    • helminths
    • hydras
    • fungi
    • phytoplankton
    • algae.

Process/Skill Questions:

  • What can a survey of macroinvertebrates tell one about the health of a stream or other body of water?
  • How are temperature and dissolved oxygen related?