Close Encounters of the Symbiotic Kind or Ruby, Don't Take Your Parasitism to Town!

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.