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science
Question | Answer |
---|---|
chordate | phylum members |
notochord | a flexible rod that supports a chordates back |
vertebra | the backbone is formed by many similar bones |
ectotherm | is an animal whose body does not produce much internal heat |
endotherm | an animal whose body regulates its own temp by controlling the internal heat producer |
fish | is an vertebrate that lives underwater |
cartilage | a tissue that is more flexible than a bone |
swim bladder | gas filled sac |