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Dig a hole, line it, fill it with fresh water, and you have a water hole: a good place to study colonization.

As a long-term project, you can rear monarch butterflies at home or in a classroom.

In this activity, learners create a sealed, mini ecosystem that supplies freshwater shrimp with food, oxygen, and waste processing for at least three months.

In this outdoor activity/field trip, learners investigate organisms that live along the ocean's rocky coast.