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A Funny Taste
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In this activity, learners explore the different salinities of various sources of water by taste-testing.
The Rain Man
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In this activity, learners observe the hydrologic cycle in action as water evaporates and condenses to form rain right before their eyes.
The Effects of Acid Rain
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In this environmental science activity (page 4 of the PDF), learners use vinegar and chalk to observe the effect of acid rain on various building materials and plant life.