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Millions of organisms can live in and around a body of water.

Learners use a variety of beans to represent a variety of species, and scatter these beans over a large piece of paper representing the environment.

In this investigation learners explore the differences between, and interdependence of, living and nonliving elements in a water ecosystem.

In this activity, learners role-play the part of lake inhabitants and the aquatic exotics who displace the native species.

In this lesson, learners will understand the concepts behind endangered and extinct animals and develop their own conservation plan to save three endangered species.

In this activity, learners investigate the food, water, and space needs of common livestock animals.