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Community
A group of various species that live in the same place and interact with one another
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Ecosystem
The group, along with the living and nonliving environment, make up an ecosystem
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Habitat
The place where an organism lives
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Biodiversity
The variety of organisms in a given area
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Succession
The replacement of one community by another at a single place over a period of time
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Climate
The average weather conditions in an area over a long period of time
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Biome
A large region characterized by a specific kind of climate and certain kinds of plants and animal communities
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Producer
The basic food source for an ecosystem
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Consumer
Organisms that eat other organisms instead of producing their own food
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Decomposer
Organisms that break down the remains of animals
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Trophic Level
Each step in the transfer of energy through an ecosystem
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Energy Pyramid
A triangular diagram that shows an ecosystem's loss of energy, which results as energy passes through the ecosystem's food chain
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Carbon Cycle
The continuous movement of carbon from the nonliving environment into living things and back
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Respiration
The process of exchanging oxygen and CO2 between organisms and their surroundings
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Nitrogen Cycle
The process in which nitrogen circulates among the air, soil, water, and organisms in an ecosystem
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Phosphorus Cycle
the movement of phosphorus in different chemical forms from the surroundings to organisms and then back to the surroundings
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