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20 Cards in this Set
- Front
- Back
Ecology
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study of interactions that take place among organisms and their environment
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Biosphere
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part of Earth that supports life, including the top portion of Earth's crust, the atmosphere, and all the water on Earth's surface
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Ecosystem
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all the living organisms that live in an area and the nonliving features of their environment
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Population
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all the organisms that belong to the same species living in a community
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Community
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all the populations of different species that live in an ecosystem
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Habitat
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place where an organism lives and that provides the types of food, shelter, moisture, and temperature needed for survival
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Limiting Factor
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anything that can restrict the size of a population, including living and nonliving features of an ecosystem, such as predators or drought
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Carrying Capacity
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largest number of individuals of a particular species that an ecosystem can support over time
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Consumer
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organism that cannot create energy-rich molecules but obtains its food by eating other organisms
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Producer
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organism, such as a green plant or alga, that uses an outside source of energy like the Sun to create energy-rich food molecules
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Food Chain
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simple model of the feeding relationships in an ecosystem
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Food Web
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model that shows the complex feeding relationships among organisms in a community
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Symbiosis
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any close relationship between species, including mutualism, commensalisms, and parasitism
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Mutualism
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a type of symbiotic relationship in which both organisms benefit
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Parasitism
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a type of symbiotic relationship in which one organism benefits and the other organism is harmed
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Commensalism
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a type of symbiotic relationship in which one organism benefits and the other organism is not affected
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Abiotis
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nonliving, physical features of the environment, including air, water, sunlight, soil, temperature, and climate
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Biotic
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features of the environment that are alive or were once alive
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Niche
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in an ecosystem, refers to the unique ways an organi9sm survives, obtains food and shelter, and voids danger
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Invasive (or nonnative or introduced) species
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species that moves into an ecosystem as a result of human actions and can reduce or eliminate populations of native species
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