| A | B |
|---|
| Decomposers | essential member of an ecosystem that break down wastes |
| biosphere | part of the earth where life exists |
| canopy | top of trees in the rainforest |
| ecosystem | interaction of the abiotic and biotic factors in an environment |
| carbon and oxygen cycles | relationship between respiration and photosynthesis |
| predator/prey relationship | a fox eats a mouse |
| temperature | abiotic factor that affects land biomes more than aquatic biomes |
| neritic zone | lies between the intertidal and open-sea |
| estuary | salt marsh, lagoon, mangrove swamp |
| biogeochemical cycles | move nutrients through an ecosystem |
| intertidal zone | organisms that live here experience radical changes in their environment daily |
| food chain | big fish eats little fish eating phytoplankton |
| .1% | amount of the sun's energy used by living things |
| pyramid of biomass | shows the dry weight of living tissue at each trophic level |
| energy | cannot be recycled |
| nitrogen cycle | include bacteria that live on the root of certain plants |
| permafrost | layer of permanetly frozen ground in the Tundra |
| limiting factors | nutrients that cna prevent productivity in an ecosystem if they are lacking |
