| A | B |
|---|
| individual | single organism in an environment |
| population | same group of individuals in same environment |
| community | all living organism living together |
| ecosystem | interaction of a community in a physical environment |
| habitat | area used by an organism to carry out life |
| niche | to carry out a certain role in a habitat |
| environment | area of living and non-living surroundings |
| population density | number of organisms in a certain area |
| producers | organisms that make their own food using inorganic matter |
| consumers | organisms that use or eat producers |
| decomposers | organisms that break down dead material |
| competition | to actively seek and use environmental materials |
| instinct | a behavior an organism inherits |
| symbiosis | a long term relationship between organisms which benefit one or both |
| predator | an animal that lives by killing and eating other animals |
| prey | an animal hunted and killed by another animal for food |
