| A | B |
|---|
| Biosphere | Thin shell around the earth in which all physically living things live. |
| Ecosystem | An interconnected community of organisms in its environment that functions as a unit. |
| Habitat | An area where a type organism lives ; its address. |
| Niche | The activity of an organism and how it fits into its habitat |
| Limiting Factors | The things (like sunlight amount, carbon dioxide, temperature, ect.) that limit the growth or existence of an organism. |
| biogeochemical cycles | Matter that is cycled through the biosphere and ecosystems. |
| biotic factors | All living things in an ecosystem. |
| abiotic factors | All nonliving things in an ecosystem. |
