| A | B |
|---|
| abiotic | non-living parts of the ecosystem |
| biotic | the living parts of the ecosystem |
| energy | needed by all living things to survive |
| population | a group of the same type of organisms |
| ecosystem | a community and the abiotic environment |
| biosphere | part of the Earth where all life exists |
| community | all the different species living together in an area |
| producers | use sunlight to make their own food; base of the energy pyramid because they receive the most energy from the sun |
| consumers | eat producers or other animals |
| herbivore | eats only plants |
| carnivore | eats only animals |
| omnivore | eats both plants and animals |
| scavenger | feeds off of dead animals |
| decomposer | eats dead organisms and returns nutrients to the soil |
| habitat | the specific envirnoment where an organism lives |
| niche | an organism's role in its environment |
| ecology | the study of the interactions between organisms and their environment |
| food chain | shows how energy moves from one organism to another |
| food web | includes many food chains; shows the many possible paths that energy can take |
| energy pyramid | one way to show how energy passes through an ecosystem |
| 10% | the amount of energy passed from one organism to another in a food chain |
