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Ecosystems
general
| Term | Definition |
|---|---|
| producers | green plants that make their own food through photosynthesis |
| biome | a large naturally occurring community of flora and fauna occupying a major habitat |
| energy pyramid | a graphical model of energy flow in a community |
| consumers | heterotrophic organism that feeds on other organisms in a food chain |
| freshwater | naturally occurring water on Earth's surface in ice sheets, ice caps, glaciers, icebergs, bogs, ponds, lakes, rivers and streams, and underground as groundwater. |
| decomposers | an organism, especially a soil bacterium, fungus, or invertebrate, that breaks down organic material |
| biotic | all the living things in an ecosystem |
| marine | pertaining to the sea |
| food chain | a hierarchical series of organisms each dependent on the next as a source of food |
| abiotic | all the nonliving things in an ecosystem such as water, air, and sunlight |
| desert | arid land with usually sparse vegetation; having a very warm climate and receiving less than 25 centimeters (10 inches) of rainfall annually |
| limiting factors | environmental conditions that limit the growth, abundance, or distribution of an organism or a population of organisms in an ecosystem |
| tundra | refers only to the areas where the subsoil is permafrost, or permanently frozen soil |
Created by:
Ms. Long 6
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