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Unit 2.2

Cycles & Succession

QuestionAnswer
The organic circulation of carbon from the atmosphere into organisms and back again Carbon Cycle
A stable community of plants that no longer goes through major ecological changes. Climax Community
A rapid reaction between oxygen and fuel that results in fire Combustion
The predictable replacement of one group of species by another group of species over time. Ecological Succession
A process by which nutrients, particularly phosphorus and nitrogen, become highly concentrated in a body of water, leading to increased growth of organisms such as algae or cyanobacteria. Eutrophication
A natural energy source (fuel) such as coal or gas, formed in the geological past from the remains of living organisms. Fossil Fuel
The combination of a fungus and either an alga or an autotrophic bacterium that live together in a mutualistic relationship on bare rock (a pioneer species) Lichen
The transfer of nitrogen from the atmosphere to the soil, to living organisms, and back to the atmosphere. Nitrogen Cycle
Bacteria that convert nitrogen in the air into forms that can be used by plants and animals. Nitrogen Fixing Bacteria
The movement of phosphorous atoms from rocks through the biosphere and hydrosphere and back to rocks. Phosphorous
First species to populate an area during primary succession. Pioneer Species
Ecological succession that begins in an area where no biotic community previously existed Primary Succession
Succession following a disturbance that destroys a community without destroying the soil. Secondary
The continuous process by which water moves from Earth's surface to the atmosphere and back Water Cycle
Created by: Coach Outlaw
 



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