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Ecosystems

general

TermDefinition
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