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

In this activity, learners will create a diagram of the ocean zones and determine what organisms live in each zone.

This activity focuses on interactions within Earth systems and the effects of human activities. In this activity learners build a biomass pyramid.

In this activity, learners construct a coastal landmass from sand and add features such as tidal creeks and barrier islands.