Ms.Munro's 2nd period science: Ecology Unit Vocabulary Words and Definitons
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Abiotic (factor) | An environmental factor that is not associated with the activities of living organisms.
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Biotic (factor) | An environmental factor that is associated with or results from the activities of living organisms.
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Carbon Cycle | The movement of carbon from the nonliving environment into living things and back.
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Commensalism: | A relationship between two organisms in which one organism benefits and the other is unaffected.
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Competition | Ecological relationship in which two or more organisms depend on the same limited resource.
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Consumer | An organism that eats other organisms or organic matter.
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Decomposer | An organism that gets energy by breaking down the remains of dead organisms or animal wastes and consuming or absorbing the nutrients.
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Ecology | The study of interactions of living organisms with one another and with their environment.
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Ecosystem | A community of organisms and their abiotic, or nonliving, environment.
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Energy Pyramid | A triangular diagram that shows an ecosystem’s loss of energy, which results as energy passes through the food chain; each row in the pyramid represents a trophic feeding level in an ecosystem, and the area of a row represents the energy store in that tro
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Food Chain | The pathway of energy transfer through various stages as a result of the feeding patterns of a series of organisms.
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Food Web | A diagram that shows the feeding relationship between organisms in an ecosystem.
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Limiting Factor | An environmental factor that prevents an organism or population from reaching its full potential of size or activity.
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Mutualism | A relationship between two species in which both species benefit.
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Parasitism | A relationship between two species in which one species, the parasite, benefits from the other species, the host, which is harmed.
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Predator | An organism that kills and eats all or part of another organism.
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Prey | An organism that is killed and eaten by another organism.
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Producer | An organism that can make its own food by using energy from its surroundings.
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Symbiosis | A relationship in which two different organisms live in close association with each other.
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Water Cycle | The continuous movement of water between the atmosphere, the land,the ocean, and living things.
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