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In this chemistry challenge, learners identify which plants have the enzyme "catalase" that breaks hydrogen peroxide into water and oxygen.

In this environmental science activity, learners research what is essential for plant life and the necessary components of soil to support plants.

In this activity, learners turn empty 2-liter bottles into a see-through compost container.

This activity shows you how to make a mold terrarium using a jar and leftover food.

Learners design their own experiment to determine conditions that either help or hinder the decomposition of carrots by soil microbes.

In this outdoor activity, learners make their own organic-rich soil. Depending on where this activity is done, learners will probably discover that their local soil is low in organic matter.

This activity (page 2 of the PDF under SciGirls Activity: Bogs) is a full inquiry investigation into decomposition.