| A | B |
|---|
| individual | a single organism in an environment |
| population | individuals of the same kind living in the same environment |
| community | all the populations of organisms living together in an environment |
| ecosystem | a community and its physical environment |
| habitat | place where a population lives in an ecosystem; it is like a neighborhood and it is shared by many different populations |
| niche | role (job) held by each population within a habitat |
| limiting factors | things such as soil conditions, temperature, amount of rainfall, and amount of food that determine the types of plants and animals that live there |
| species | a group of animals with the same characteristics and physical make up |
