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4th Grade McGraw-Hill Science 2005, Unit B, Lesson 2

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Vocab Term
Definition
cnidarian   invertebrate with poison stingers on tentacles  
endoskeleton   internal supporting structure of an echinoderm - often has many protective spines  
echinoderm   spiny-skinned invertebrate  
mollusk   soft bodied invertebrate  
arthropod   invertebrate with jointed legs and a sectioned body  
exoskeleton   hard skeleton on the outside of an arthropod's body  


   


 

 

 

 

 

 
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