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Use a celery stalk to explore the movement of water in plants.
Explore the effectiveness of a variety of materials to clean up a small oil spill.
Design and build a water filtration system using simple materials.
Explore how to measure acidity using a cabbage.
Explore the effects of acid rain on rocks and minerals.
Build a small terrarium for growing plants.
With simple materials, explore how greenhouses gases affect temperature.
Observe the water cycle in action on a miniature scale.