69)a species of animals that has 3 chambered hearts are amphibians have this so they can change their oxygen needs for when they go underwater. An example of an amphibian with a three chambered heart would be a frog.
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Showing posts with label Source (http://answers.yahoo.com/question/index?qid=20080417135333AAi3FDl). Show all posts
Wednesday, June 9, 2010
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