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30 Cards in this Set
- Front
- Back
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Abiotic
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nonliving parts of the environment
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Autotroph
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An organism that produces its own food; the source of energy for all other living things on earth
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Biodiversity
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The variety of species in an area
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Biosphere
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All of Earth's ecosystems, collectively; the biologically inhabited portions of Earth, including all of the water, land, and air in which organisms survive
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Biotic
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The living parts of the environment
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Carnivore
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An organsim that survives only by eating animals
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Carrying capacity
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the largest population of any single species that an area can support
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Community
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a combination of all different populations that live and interact in the same environment
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Competition
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the struggle between organisms for the same limited resources in a particular area
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Consumer
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an organism that obtains its energy from producers
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Decomposer
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an organism, generally a bacterium or fungus, that ocnsumes dead organisms and organic waste
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Ecology
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The study of how living things interact with one another and with their environment
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Ecological niche
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the specific role played by an organism or a population of organisms in the ecosystem
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Ecological succession
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The process by which an existing community is replaced by another community
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Ecosystem
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all living and nonliving things that interact in a specific area; a subdivision of the environment
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Energy pyramid
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a diagram showing how food energy moves through the ecosystem
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Environment
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Every living and nonliving thing that surrounds an organism
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Food Chain
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a representation that identifies the specific feeding relationships among organisms
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Food web
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a representation of many interconnected food chain that shows the feeding relationships among producers, consumers, and decomposers
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Habitat
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the place where an animal or plant lives
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Herbivore
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an organism that eats only plants
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Heterotroph
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an organism that cannot make its own food; a consumer
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Host
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the organism in a parsasitic relationship that provides a home and/or food for the parasite
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Limiting factors
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any factor in the environment that limits the size of a population
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Parasite
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an organism that survives by living and feeding on other organisms
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Population
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all the individuals of a single species that live in a specific area
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Predator
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an animal that hunts and kills other animals for food
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Prey
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an animal that is hunted and killed by predators
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Producer
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an organism that makes its own food from light energy and inorganic materials
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Scavenger
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a carnivore that fees on the bodies of dead organisms
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