| A | B |
|---|
| coldblooded | animals that can not control their body temperature |
| jawless fish | also boneless, flexible with skeletons made of cartilage. |
| cartilaginous fish | skeletons made of cartilage,have jaws and scales. |
| bony fish | fish that have an operculum,usually ray-finned |
| ray-finned | pairs of fins of fish that are long and bony. |
| operculum | a bony plat that covers and protects gills |
| gills | contain blood vessels and thin membranes that allow oxygen to pass |
| milt | male fish fluid containing sperm |
| amphibians | an animal that lives in water and land |
| metamorphosis | frogs life-change:eggs,tadpole,adult |
| reptiles | an animal that lives and reproduces on land and prefer wet environments |
| venomous | animal that is able to inject poison into victims. |
