Examination may include testing water for chemical and biological indicators such as
- phosphates
- biological indicators
- temperature
- pH
- dissolved gases
- dissolved solids
- wastes
- hardness
- salinity
- nitrates
- nitrites
- pollution.
Process/Skill Questions:
- How do changes in water quality affect aquatic species?
- How can the water quality of a pond be improved?
- What aquatic plants and animals indicate a healthy water system?
- How does Virginia Save Our Streams (VASOS) use biological indicators to determine water quality?
- How is VASOS data used by government agencies?
Teacher Resources: