1. Terraqua Columns - Sources and Standards

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Sources
Bottle Biology contains everything you wanted to know about terraqua columns.

The Learner website has wonderful pictures of terraqua columns in progress as well as many extensions to try.

Standards
Grade Six
Ecology (Life Sciences)
5. Organisms in ecosystems exchange energy and nutrients among themselves and with the environment.

Submitted by irene on Thu, 2005-07-14 14:29