Keystone Standards:

A.4.2.1. Explain how organisms maintain homeostasis( e.g., thermoregulation, water regulation, oxygen regulation)

Thermoregulation links:
http://www.ann.com.au/medsci/rmoregul.htm
http://otah2o.wikispaces.com/01+Homeostasis
http://wc.pima.edu/Bfiero/tucsonecology/adaptations/thermoregulation.htm

Osmoregulation

http://purchon.com/wordpress/biology/?page_id=170


Oxygen Regulation
http://www.emc.maricopa.edu/faculty/farabee/biobk/BioBookRESPSYS.html