BJ 10.4.23 Aquatic Ecology Class 9147.JPG
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October 4, 2023; Student Caitlin Yarusso titrates a sample of water from St. Mary’s Lake with sulfuric acid using colored pH indicators to measure the buffering capacity (alkalinity) of the lake in Aquatic Ecology class taught by Rev. Terrence Ehrman, C.S.C. (Photo by Barbara Johnston/University of Notre Dame)
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