| A | B |
|---|
| Ecology | Study of interactions among organisms |
| Biosphere | Portion of earth that supports life |
| Abiotic Factors | Non-living parts of the environment |
| Biotic Factors | Living parts of the environment |
| Population | Group of one species that live in same place at same time |
| Community | Collection of interacting populations |
| Ecosystem | Made up of populations, physical surroundings and abiotic factors |
| Habitat | Place where organism lives out its life |
| Niche | The special role and postion of a species in its environment |
| Symbiosis | Close, permanent relationship among different species |
| Commensalism | Relationship where one species benefits, other is neither harmed or benefits |
| Mutualism | Symbiotic relatioship where both species benefit |
| Parasitism | Symbiotic relationship one organism benefits, other is harmed |
| Autotroph | Organisms that manufacture own nutrients |
| Heterotrophs | Organisms that cannot make their own food |
| Scavengers | Animals that eat dead stuff |
| Herbivores | Animals that feed only on plants |
| Carnivores | Meat eating animals |
| Omnivores | Organisms that eat both plants and meat |
| Carnivore | Lions would be classified as this |
| Herbivores | Cows and horses would be classifed as this |
| Scavengers | Crows would be classified as this |
| Carrion | Animals that have already died; food for scavengers |
| Decomposers | Organisms that break down complex compoounds of dead plants and animals |
| Decomposers | Fungi are classified as this |
| Decomposers | Many bacteria and protozoans are classified as this |
| Food Chain | Simple model to show how food and energy move through ecosystem |
| Food Chain | Mouse eats grass, Cat eats mouse would be an example of this |
| Food Chain | Cat -->Mouse-->Seeds is an example of a |
| Trophic level | A feeding step in the passage of energy and materials |
| Food Web | A model that expresses all the possible feeding relationships/trophic level |
| Water Cycle | How water passes through stages |
| Carbon Cycle | How carbon passes through ecosystems |
| Nitrogen Cycle | How nitrogen passes through ecosystems |
| Phosphorus Cycle | How phosphorus passes through ecosystems |
| Nitrogen Cycle | Fertillizer, certain bacteria, plants, urine are part of this cycle |
| Water Cycle | Rain, evaporation, condensation, snow are part of this cycle |
| Carbon Cycle | Atmosphere, photosynthesis, wastes, pollution are part if this cycle |
