| Word | Meaning |
| adaptation | a structure or behavior that helps an organism survive in its surroundings |
| function | the job that a body part does in an organism |
| strucure | a body part that does have a certain job for an organism |
| structrual adaptations | an adaptation of an organism's body parts or its coloring |
| mimicry | one organism looking like another kind of organism in it environment so it can escape preditors or catch prey. |
| behavioral adaptation | an inherited behavior that helps an organsim survive |
| fossil | the remains or traces of an organism that lived long ago |
| mold | a fossil that formed when when an organism pressed into mud, leaving a shape that hardened into rock |
| cast | a fossil that formed when a space left by an organism was filled with minerals or grains of rock that turned into solid rock |
| petrified fossil | a fossil that formed when the hard parts of an organism were replaced by minerals |
