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

In this long-term activity, learners make a home for a colorful community of microorganisms.

In this astrobiology activity (on page 11 of the PDF), learners consider what organisms need in order to live (water, nutrients, and energy).

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

Learners make kimchee or sauerkraut, which is really just fermented cabbage, in a 2-liter plastic bottle.