| Term | Definition |
|---|
| Ecosystem | An association of living organisms and their physical environment |
| Ecology | The study of relationships among organisms in ecosystems |
| Producers | Organisms that produce food for themselves |
| Consumers | Organisms that use the food from the producers |
| Herbivores | Animals that eat only plants |
| Carnivores | Animals that eat only other animals |
| Primary Consumer | An organism that eats producers |
| Secondary Consumer | An organism that eats primary consumers |
| Tertiary Consumer | An organism that eats secondary consumers |
| Trophic Levels | The relationships between primary secondary and tertiary consumers |
| Ecological Pyramid | A diagram that shows the biomass of organisms at each trophic level |
| Biomass | A measure of the mass of organisms within a region divided by the area of that region |
| Symbiosis | Two or more organisms living in a mutually beneficial relationship |
| Watershed | An ecosystem where all water runoff drains into a single river or stream |
| Transpiration | Evaporation of water from the leaves of a plant |
| Greenhouse Effect | The process by which certain gases trap heat that would otherwise escape the earth and radiate into space |
Combine with other sets
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