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15 Cards in this Set
- Front
- Back
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What is a model that shows the amount of energy available at each level of an ecosystem?
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energy pyramid
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What do we call the struggle among organisms to survive in a habitat with limited resources?
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competition
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What do we call a close, long-term relationship between organisms that benefits at least one of the organisms?
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symbiosis
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What do we call an organism that benefits from symbiosis?
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parasite
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What do we call an organism that is harmed in symbiosis?
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host
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What is a series of predictable changes that occur in an ecosystem over time?
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succession
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What is a word for all the conditions that surround a living thing?
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environment
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What is a group of individuals that belong to the same species and live in the same area?
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population
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What is a group of populations that interact with each other in a particular area?
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community
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What is an area in which living things and nonliving parts of the environment interact?
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ecosystem
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What do we call the nonliving parts of an ecosystem?
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abiotic factor
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What do we call the living organisms in an ecosystem?
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biotic factor
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What is a large group of ecosystems with similar climates and organisms?
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biome
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What is an organism that breaks down the chemicals from dead organisms and returns materials to the environment?
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decomposer
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What do we call it when all living individuals of a species have died?
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extinction
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