| A | B |
|---|
| eats producers only | herbivore |
| eats consumers only | carnivore |
| eats dead things | scavenger |
| anything that makes its own food | producer |
| eats producers & consumers | omnivore |
| omnivores | humans are categorized as |
| producers | belong in 1st trophic level |
| herbivores | belong in 2nd trophic level |
| carnivores | belong in 3rd trophic level |
| scavengers & decomposers | get energy from all trophic levels |
| trophic level with most energy available | 1st |
| predator-prey | catch, kill, eat |
| parasite-host | one organism harms another |
| commensalism | one organism is not affected |
| mutualism | both organisms help each other |
| competition | struggle for limited resources |
| process reduces carbon dioxide in air | photosynthesis |
| increase carbon dioxide in air | cell respiration, combustion, decompostion |
| evaporation from plants | transpiration |
| makes energy for cells to use | cell respiration |
| help processes in nitrogen cycle | bacteria |
| succession | organisms moving back into area after disaster |
| return of species to an area that was destroyed | succession |
| abiotic factor | something not living |
| temperature, wind, soil, pH, salinity, lakes, etc. | examples of abiotic factors |
| biotic factor | something alive in an area |
| plants, bacteria, predators, prey, omnivores, etc. | examples of biotic factors |
| niche | the role of an organisms in an ecosystem |
| the job an organism does in the environment | niche |
| precipitation | can lead to run-off |
| any form of water falling from the sky | precipitation |
| condensation | moisture or humidity becoming liquid droplets |
| ___ in the clouds causes precipitation | condensation |
| run-off & excess nitrogen on ground | can contribute to algae blooms |
| considered opposite of photosynthesis | cell respiration |
