| Term | Definition |
| Biosphere | Area on earth where all life exists |
| Biomes | Area of land with a specific climate and a specific group of organisms |
| ecoysystem | An area where living and non living interact |
| Niche | organism that has its role in its habitat that only one organism lives |
| Herbivore | plants |
| Carnivore | meat ( animal product) |
| Omnivore | both meat and plant |
| Competiton | Two or more organism challenging each other |
| Parasitism | 1 organism gets hurt (host) |
| Example of Paratism | Tape worm |
| mutalism | both organism benefit 1organism is unaffected |
| Commensalism | 1 organism benefits and 1 organism is unaffected |
| Renewable Resources | Natural resources that can be replaced |
| Non Renewable Resources | Natural resources that can`t be replaced |
| Food Chain | series of steps in an ecosystem in which organisms transfer energy by eating and being eaten |
| Food Web | a community of organisms where there are several interrelated food chains |
| Consumer | An organism that eats a food that is from an organism |