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How Fast Can a Carrot Rot?
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Learners design their own experiment to determine conditions that either help or hinder the decomposition of carrots by soil microbes.
Super Soaker
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In this activity (page 1 of the PDF under SciGirls Activity: Bogs), learners will test cups full of potting soil, sand, and sphagnum moss to see which earth material is able to soak up the most water.