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Ecology and the Food Chain
vocabulary for ecology and the food chain
19
Science
7th Grade
04/23/2008

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Term
Biomass
Definition
The total organic mater in an ecosystem.
Term
Ecosystem
Definition
A system of interacting organisms and nonliving factors in a specified area.
Term
Food Chain
Definition
A sequence of organisms that eat one another in an ecosystem.
Term
Food Web
Definition
All the feeding relationships in an ecosystem.
Term
Herbivore
Definition
An organisms that eats only plants.
Term
Consumer
Definition
An organisms that eats other organisms.
Term
Decomposer
Definition
An organisms that consumes parts of dead organisms and transfers all the biomass into simple chemicals.
Term
Trophic Level
Definition
Functional role in a feeding relationship through which energy flows.
Term
Producer
Definition
An organism that is able to produce its own food through photosynthesis.
Term
Omnivore
Definition
A consumer that eat both plants and animals.
Term
Carnivore
Definition
A meat-eating animal; a predator
Term
Coniferous
Definition
Referring to a tree that bears cones.
Term
Deciduous
Definition
Referring to a tree that sheds all of its leaves seasonally.
Term
Ecologist
Definition
A scientist who studies organisms and their physical surroundings.
Term
Niche
Definition
An organism's place and function in a community.
Term
Rain Forest
Definition
Region that receives at least 100 inches of rain per year.
Term
Tundra
Definition
A treeless area between the ice cap and the tree line of Arctic regions.
Term
Photosynthesis
Definition
The process by which producers make energy-rich molecules (food) from water and carbon dioxide in the presence of light.
Term
Biosphere
Definition
The part of Earth and its atmosphere where life exists.
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