| A | B |
|---|
| arthropod | joint footed animals with an exoskeleton and a segmented body |
| exoskeleton | outer body covering of arthropods |
| molting | shedding of old exoskeleton and growing a new one |
| crustaceans | arthropods with hard exoskeletons, 2 pairs of antennae, mouth parts for grinding and chewing |
| abdomen | part of the arthropod or insect that contains internal organs |
| appendages | legs that stick out of the main body |
| trachea | a breathing tube or windpipe |
| booklungs | lungs that resemble the pages of a book |
| cephalothorax | the head chest region |
