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Clean Water: Is It Drinkable?
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In this activity, learners simulate nature's water filtration system by devising a system that will filter out both visible and invisible pollutants from water.
Wetland Filter Model
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In this quick activity (located on page 2 of the PDF under GPS Wetlands Activity), learners will model how wetlands act as natural filters for the environment.
Filtration Investigation
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In this activity, learners explore how engineering has developed various means to remove impurities from water.