Lesson 3.03 Sources of Drinking Water

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1. True or false: organisms that inhabit the earth’s aquatic sources are never affected by the quality of the water in which they live.

   Answer: False

2. When aquatic organisms are able to adjust to small change in water quality, they are said to be able to _______.

   Answer: acclimate

3. Organisms have certain ranges of water quality in which they can live and thrive. Outside of that range they begin to _______.

   Answer: suffer

4. _________ decreases when water quality is poor?

   Answer: Life expectancy

5. How do scientists determine a water quality?

   Answer: Chemical testing

6. Another method to determine water quality is __________. With this method, scientist study the types and numbers of living organisms present in the water.

   Answer: bioassessment