Bio07_TR__U02_CH4.QXD
Healthy Ranges For Abiotic Factors in Freshwater Ecosystems * pH: 6.0- 9.0 (Ideal: 6.5- 8.0) pH is a measure of the number of hydrogen ions and thus a measure of acidity. pH is measured on a logarithmic scale between 1 and 14 with 1 being extremely acid, 7 neutral, and 14 extremely basic. ................
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