| A | B |
|---|
| biosphere | consists of all life on earth/parts of earth |
| ecology | study of interaction between organisms and environment |
| autotrophs | organisms that can build organic molecules |
| heterotrophs | organisms that cannot build organic molecules |
| primary producers | occupy the first trophic level |
| consumer | an organism that relies on another organism for food |
| carnivore | a consumer that eats only meat |
| herbivore | a consumer that eats only plant material |
| omnivore | a consumer that eats both plant and animal material |
| scavenger | a consumer that eats dead animals |
| biomass | the amount of grams of organic matter per unit area |
| population | a group of individuals of the same species |
| community | a group of populations living together in an area |
| ecosystem | the community and the environment |
| biome | a group of ecosystems with similar climates and organisms |
