Example: biology
Search results with tag "Acid rain experiments"
Acid Rain Experiments - Cornell University
ei.cornell.eduAcid precipitation is defined to have a pH lower than 5.6. In New York, the average pH of rainfall is 4.0-4.5 and individual storms as low as 3.0 are not unusual. Freshwater lakes commonly are slightly basic. pH's in the range of 6.5 to 8.2 are optimal for most organisms, and below 5.0 is lethal to many fish species.