STC Program: Ecosystems, 2nd Edition
This unit focuses on a much larger ecosystem-the Chesapeake Bay watershed. You'll discuss the bay's complex problems, including pollution and population challenges, and students will discover that in a large ecosystem, as in their columns, altering one resource can impact others.
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Ecosystems Unit Kit Item #972801AV
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Student Investigations, Ecosystems Item #972803B
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STC Program: Ecosystems Refurbishment Set Item #972804
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STC Literacy Series™: Ecosystems, Pack of 8 Item #972896
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KIDS DISCOVER: Ecology, Pack of 8 Item #972898
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STC Planner: Ecosystems Item #97281P