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This comprehensive resource includes an entertaining game that simulates the changes taking place when pollution finds its way into a stream. Students take on the roles of different aquatic insects trying to cope with the added stress created by the...
Drive by a marsh in the winter and the mounds of vegetation that provide houses for muskrats stand out against the frozen background. Uniquely adapted to a semi-aquatic life, these furry, brown rodents are a common sight throughout North American marshes,...