Close Encounters of the Symbiotic Kind or Ruby, Don't Take Your Parasitism to Town!
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An Integrated, Interdisciplinary, Thematic, Standards-based Unit on symbiosis. Nature (of which we are a part) exists in a delicate and sometimes fragile balance. The essential concepts in this unit are: commensalism, parasitism, mutualism, interdependence, the food chain, recycling, and ecology.
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