| A | B |
| ecology | study of interactions between organisma and their environment |
| interact | to act upon or influence something |
| succession | the process by which a community changes over time |
| biome | an ecosystem found over a large geographic area |
| biosphere | the part of Earth where living things can exist |
| climax community | ecosystem that does not change much |
| mutualism | a relationship two organisms in a relationship where both benefit |
| predator | animals that hunt |
| prey | animals that are hunted |
| food chain | plots which organism eats which other organism |
| food web | mapping of relationships in an ecosystem |
| carbon cycle | recycles gas expelled by animals |
| nitrogen cycle | shows how nitrogen is recycled |
| water cycle | shows how water is recycled |