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In this food science activity, learners conduct an experiment that demonstrates the importance of light to plants.

In this activity, learners determine the necessary conditions for pea seed germination.

In this activity on page 7 of the PDF (Plants—The Green Machines), learners examine the effects that light and air have on green plants.

In this laboratory activity, learners design an experiment to evaluate how environmental factors influence the growth of molds.

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