1.Put 1 and 2 3rds a cup of freshwater into 2 cups. 2.Put salt in one. 3.Label one freshwater and the other one saltwater. 4.Slice a potato into 2 slices. 5.Put 1 slice if potato into saltwater cup and 1 in freshwater cup. 6.Take pictures every 3 days for 6 days.
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