| A | B |
|---|
| ecosystem | communities and habitats together |
| community | populations of species living together |
| population | individuals of one species living together |
| individual | one single organism |
| niche | a populations role in an ecosystem |
| habitat | the physical environment of a habitat |
| population density | the number of organisms in a habitat |
| climate | weather |
| prey | one who is hunted |
| predator | one who hunts |
| limiting factors | the factors in an ecosystem that limit growth |
