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| (32)Scale from an animal with a two-chambered heart.
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Some species have a two-chambered heart that supports single
circulation. The two-chambered heart can be in found in fish, contrasted to
reptiles and amphibians that have a three-chambered heart. Fishes have a two-chambered heart because they have gills, instead of lungs. August 7th,
2:48 pm, Giant
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Wednesday, August 8, 2012
(32)Scale from an animal with a two-chambered heart
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