| A | B |
|---|
| ecosystem | all the living and non living things in an area |
| population | a group of organisms of one species living in an area at the same time |
| community | all populations in an area, members of this depend on each other to fill needs |
| adaptation | something a living thing has to help it survive |
| symbiotic | a partnership between organisms, one species is always helped in this relationship |
| carnivores | meat eater |
| pressure | The amount of either water or air that is over an organism |
| decomposers | break down remains of dead organisms, make nitrogen compounds |
| biome | a large ecosystem with the same climate and organisms, it may cover many countries |
| energy pyramid | a diagram that shows the amount of energy that flows through the levels of the food chain |
