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Water-Holding Capacity (NYSED)
(NYSED) University of Buffalo and NORC (1991) The retention of water by different materials affects their use by plants and animals. In this activity, students design a method to determine the water-holding capacity of sand, soil, and moss
Soiled Again (CAPT)
Students design and conduct an experiment to determine which earth material (sand, potting soil or limestone) or combination of earth materials will best reduce the acidity of "acid rain." Students work with a lab partner initially, then work independently to write a report and answ...
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