| A | B |
| a physical feature or behavior that helps an organism survive in its environment over time | adaptation |
| to receive characteristics from an organism’s parents | Inherit |
| a characteristic that can help an individual compete in its environment | advantage |
| the qualities that an organism has | characteristics |
| the result of reproduction | offspring |
| A behavior that is inherited | instinct |
| The movement between habitats | migration |
| Ways that animals act | behaviors |
| Something that causes a reaction in a living thing | stimulus |
| This occurs when two or more organisms need the same resources in order to survive | competition |
| A behavior that has to be taught to or studied by an animal | learned |
| To arrange or sort objects or living things according to their properties or characteristics | classify |
| Animals without backbones; Most animals on Earth are these | invertebrates |
| Plants with tube-like structures that connect their leaves, stems, & roots | vascular |
| Plants that pass water & nutrients from cell to cell | nonvascular |
| Animals with backbones | vertebrates |
| Hard, lightweight, outer skin that protects the soft body of invertebrates | exoskeleton |
| The largest group of invertebrates. Their legs & bodies are divided into sections, & it has an exoskeleton | arthropods |