| A | B |
|---|
| One type of species in an area | Population |
| All of the populations | Community |
| All of the biotic and abiotic factors in an area | Ecosystem |
| biotic | living |
| abiotic | non living things that living things depend on ex: oxygen |
| biosphere | place on earth where life exists |
| autotrophs | plants- make their own food |
| heterotrophs | organisms that can't make their own food and have to consume other organisms |
| herbivores | plant eater |
| carnivore | meat eater |
| omnivore | can obtain nutrients from both plants and animals |
| scavengers | eat dead animals that were already killed |
| predators | kill and consume their prey |
| relationship where one organism benefits and the other is unharmed | commensalism ex (barnacles on a whale) |
| relationship where both organisms benefit | Mutualism (Bee and flower) |
| relationship where one organism benefits and the other is harmed | Parasitic (intestinal worms) |
| producers | plants- produce their own food |
| original source of energy for a food chain or web | sun |
| first organism in a food chain or web | plants |
| organism in a food pyramid or web that has the MOST biomass | plants |
| transfer of energy from plants through a series of organisms with repeated stages of eating and being eaten | food chain |
| break down dead organisms and return their nutrients to the soil | decomposers |
| Name two decomposers | bacteria and fungi |
| The replacement of plant communities over a period of time until area reaches its climax community | succession |
| environmental hazard that could could disrupt an ecosystem | forest fire, hurricane etc. |
| Put in order from least stable to most stable: birch trees, various shrubs, beech-maple forest | shrubs, trees, forest |
