| A | B |
| adaptation | inherited trait that enables a species to survive in its environment |
| pigments | special chemical molecules. They absorb light energy. |
| receptors | kind of cells the receive light in the eye and kind of lens it has. |
| rods and cones | receptors in the human eye. They have those names because of their shapes |
| rods | receptors that enable you to see black and white |
| cones | receptors that detect the color your eyes see. There are three kinds |
| visual pigment | a particular kind of pigment present in cones, that is sensitive to either red, blue or green light. |
| predators | animals that hunt other animals |
| prey | animals that eaten by predators |
| behavioral adaptation | "tricks" some animals use to protect itself from predators |
| Instinct | inherited behavior. It is not learned. It decides behavior of some species. |
| physiological adaptations | involve the jobs of body parts that control the life processes that aid survival |
| structural adaptations | adaptations that involve body shape and color |