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what is a vertibrate (section 1 assesment (have a notochord, nerve chord,…

- - - - protects the internal organs
    - - called a spine, several singular bones called vertebrae
- - - - called pharyngeal, gills
    - - a flexible rod that stabilized a chordates back
    - - all chordates have a nerve chord that runs down their back. it connects the brain to the nerves
- - - - an animals whose body does not regulate internal heat
    - - an animal whose body regulates its internal heat