| A | B |
|---|
| an ocean current of cold water | abiotic factor |
| algae | an autotroph |
| a large school of clownfish | population |
| biological community | all the groups of organisms that interact with each other |
| red tailed hawks and snakes prey on the same species of mice | competition |
| a flower and a bee | example of mutualism |
| tick and a dog | example of parasitism |
| a suckerfish and a shark | example of commensalism |
| white tail deer eating leaves | example of predation |
| habitat | an area where an organism lives |
| niche | organisms way of life |
| biome | large group of ecosystems that share the same climate and organisms |
| portion of the earth that supports life | biosphere |
| decomposers | feed on dead things and return nutrients to the ecosystem |
| ecosystem | a biological community and all the abiotic factors that affect it |
| habitat | an area where an organism lives |
| ecology | study of the relationships among organisms and their physical environment |
| all organisms are classified by the way they obtain this | energy |
| heterotroph that consumes only plants | herbivore |
| heterotroph that prey on other heterotrophs | carnivore |
| examples of decomposers | fungi and bacteria |
| each step in a food chain or food web | trophic level |
| linear pathway of energy through an ecosystem | food chain |
| total mass of living matter at each trophic level | biomass |
| amount of energy available to the next trophic level | 10% |
| matter | anything that takes up space |
| changing of liquid into a gas | evaporation |
| evaporation of water through the leaves of plants | transpiration |
| rain, hail, sleet or snow | precipitation |
| changing of a gas into a liquid | condensation |
| phosphorous | needed for growth and development |
| nitrogen fixation | process of capturing and changing nitrogen into a usable form |
| denitrification | bacteria changing nitrogen into a gas released into the air |
