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| the phylum whose members have a notochord a nerve cord and slits in their throat area some point in thier life |
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| a flexible rod that supports a chordaes back |
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| a conection of nerves between your brain and the nerves going to the rest of the body |
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| the bones that make up the backbone of an animal |
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| an animal whose body does not produce much intenal heat. |
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| an animal whose body regulates its own tempature by controlling the internal heat produces |
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a vertebrate that lives in water uses fins to move are ectotherms obtain oxygen
through gills and have scales |
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| a organ in a bony fish that is a gas filled sac to help the fish stay stable at different depths in the water |
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