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Roth Ecosystems
| Question | Answer |
|---|---|
| physical environment | all non-living things |
| example of physical environment | soil, weather, landforms, air, water |
| individual | single organism in environment |
| population | individual of same kind living in same environment |
| community | all populations of organism living together in an environment |
| ecosystem | each community interacts w/ its physical environment |
| habitat | place where every population lives; neighborhood; many different populations in same habitat |
| niche | each population has certain role in habitat |
| healthy ecosystem | populations are interdependent; balance |
| producers | plants; use sunlight to make food needed; |
| Where do producers store energy? | energy not used is stored in roots, stems,& leaves |
| Why does all life in ecosystem depend on producers? | producers capture energy of sun, change it into living tissue & pass it on |
| food chain | consumers in ecosystem are connected to one another according to what they eat |
| decomposers | consumers that break down tissue of dead organisms; use some energy & return remainder to soil |
| food web | show relationship between different food chain in single ecosystem |
| energy pyramid | shows amount of energy available to pass from one level of food chain to next |
| In energy pyramid, how much energy is passed on to next higher level? | 10%--90% of energy taken in by organism is used for its own life processes |