| A | B |
| AMPHIBIANS | live both on land and in water |
| INSTINCTS | behaviors that are inherited |
| REPTILE | cold-blooded animal that lays eggs |
| BIRDS | covered with feathers |
| INSECT | arthropod with six legs |
| ALLIGATOR | large reptile that lives in fresh water |
| CROCODILE | large reptile that lives in salt water |
| SPIDER | arthropod with eight legs |
| MAMMALS | have hair or fur and have live births |
| VERTEBRATES | animals with backbones |
| INVERTEBRATES | animals without backbones |
| CELL | basic unit of a living organism that can perform all life processes |
| SPECIES | a group of living things that are so much alike they can reproduce |
| CYTOPLASM | a gel-like liquid inside a cell |
| NUCLEUS | controls a cell's activities |
| CHLOROPLAST | a cell part that plants use to make food |
| MOLLUSKS | clams, squid and octopuses |
| ADAPTATION | blending in is an example of this |
| GENUS | a group of closely related living things |
| KINGDOM | the largest classification group |
| ORGAN | a group of tissues that work together |
| TISSUE | a group of one type of cell |
| FISH | usually covered with scales |
| LEARNED | behavior that develops as a result of training or changes in experience |
| MICROSCOPE | helps you see cells |
| SYMMETRIC | a figure that can be folded along a line so that both parts match exactly |
| HIBERNATION | a state of inactivity that occurs in some animals when outside temperatures are cold |