| A | B |
|---|
| biology | the study of life |
| biotic factor | living factors in an environment |
| abiotic factor | nonliving factors in an environment |
| biome | large area that shares the same climate |
| habitat | an area where an organism lives |
| niche | role that an organism fills in its environment |
| mutualism | relationship where two organisms benefit from each other |
| commensalism | relationship where one organism benefits and the other is not harmed or benefited |
| parasitism | relationship where one organism benefits at the expense of another |
| autotroph | gets energy from the sun |
| heterotroph | gets energy by consuming other organisms |
| herbivore | organism that eats plants |
| carnivore | organism that eats meat |
| omnivore | organism that eats plants and meat |
| food chain | simple model that shows how energy flows through an ecosystem |
| food web | interconnected food chains |
