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Learning Target 6 - Biosphere- Analyze nutrient cycles and the roles species have within each.


all the living and nonliving things that interact in an area


A group of interdependent organisms inhabiting the same region and interacting with each other


all the members of one species in a particular area


part of Earth in which life exists including land, water, and air or atmosphere

Nitrogen Fixation

the conversionn of atmospheric nitrogen by soil bacteria and its release for plant use on the death of the bacteria


conversion of nitrates in the soil by bacteria into nitrogen gas

Carbon Fixation

the incorporation of carbon dioxide into organic compounds


The change of state from a gas to a liquid


loss of water from a plant through its leaves


the process by which water changes from liquid form to an atmospheric gas

Nitrogen Cycle

the circulation of nitrogen

Carbon Cycle

the movement of carbon from the nonliving environment into living things and back

Phosphorous Cycle

the movement of phosphorus from the nonliving environment into living things and then back into the nonliving environment

limiting nutrient

single nutrient that either is scarce or cycles very slowly, limiting the growth of organisms in an ecosystem


any nonliving component of an environment, a nonliving factor or element (e.g., light, water, heat, rock, energy, mineral).


Pertaining to the living organisms in the environment


Conversion of light energy from the sun into chemical energy.

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