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Eco. Vocabulary

Energy from the sun enters an ecosystem when a plant uses sunlight to make sugar molecules Photosynthesis
An organism that makes its own food Produceer
Organisms that get their energy by eating other organisms Consumers
Some consumers get their food by breaking down dead organisms Decomposers
a sequence in which energy is transferred from one organism to the next as each organ- ism eats another organism. Food Chain
shows many feeding relationships that are possible in an ecosystem. Food Web
The only organisms that can fix atmospheric nitrogen into chemical compounds are a few species of bacteria Nitrogen-fixing Bacteria
a type of succession that occurs on a surface where no ecosystem existed before. Primary Succession
the more common type of succession, occurs on a surface where an ecosystem has previously existed. Secondary Succession
The first organisms to colonize any newly available area and begin the process of ecological succession. Pioneer Species
Created by: dixieshay112