| Term | Definition |
| adaptation | types of animals that have a very specific traits that allow it to live in particular type of environment |
| behavior | an interaction of an organism and its environment |
| innate behavior | a behavior that an animals is born with |
| learned behavior | behaviors that are developed over an animals life time |
| imprinting | learnings based on an experience during a critical period early in life |
| food chain | a way to show the flow of energy from one organism to another |
| trophic levels | links or steps in a food chain |
| producers | organisms that can make their own food by photosynthesis |
| autotroph | another name for a producer |
| consumers | all organisms that are not producers and get their energy from producers |
| herbivores | are consumers that feed only on plants or plant products |
| ominvores | consumers that eat both plants and animals |
| carnivores | consumers that eat only animals |
| decomposers | organisms that obtain energy by breaking down the wastes of organisms or the remains of dead organisms |
| food web | provides a way for showing the interconnected network of food chains within an ecosystem |