| A | B |
|---|
| Chordate | animal that at some time has a tough flexible rod along back |
| endoskeleton | a skeleton on the inside of the body |
| gill | a structure used to breathe in water |
| cold blooded | having a body temperature that changes with the temperature of the surrondings |
| jawless fish | a fish that have no jaws and no scales |
| cartilage fish | fish with entire skeleton made of cartilage |
| cartilage | a tough flexible tissue that supports and shapes the body |
| bony fish | have skeletons made mostly of bone,not of cartilage |
| amphibian | an animal that lives part of its life on land and another part in water |
| hibernation | the state of being inactive during cold weather |
| estivation | dormant during hot weather(summer months) |
| reptile | an animal with dry scaly skin and can live on land |
| warm blooded | controlling the body temperature so that it stays about the same no matter what the temperature of its surrondings |
| mammal | an animal that has hair and feeds milk to its young |
| mammary gland | body parts that produce milk |
| Fish are | cold blooded animals |
| Mammals are | warm blooded animals |
| Amphibians are | cold blooded animals |
| Birds are | warm blooded animals |
| Reptiles are | cold blooded animals |
