| A | B |
|---|
| abiotic | nonliving |
| trophic level | layer of atmosphere that blocks uv light |
| limiting factors | biotic & aboitoc factors that limit # of organisms |
| greenhouse effect | traps heat on earth |
| population | # of organisms an area can sustain |
| decomposer | breaks down dead items |
| parasitsm | one organism benefits, the other is harmed |
| living | biotic |
| global warming | average temperature of earth increasing |
| heterotroph | can not make own food |
| succession | progression of changes in an environment over time |
| community | groups of population living in same place |
| mutualism | both organisnms benefit |
| autotroph | makes own food |
