2-1 Organisms and Their Relationships

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What is commensalism?

Back

A relationship in which one organism benefits and the other organism is neither helped nor harmed.

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What is symbiosis?

Back

The close relationship that exists when two or more species live together.

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What is the biosphere?

Back

The portion of Earth that supports life.

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What is predation?

Back

One organism pursuing and consuming another organism for food.

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What is ecology?

Back

The scientific discipline in which the relationships among living organisms and the interaction the organisms have with their environments are studied.

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What is mutualism?

Back

A relationship in which both organisms benefit from the interaction.

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What is parasitism?

Back

A relationship in which one organism benefits at the expense of another organism.

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What is an ecosystem?

Back

A community of living organisms and their interactions with their abiotic environment.

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What is a biotic factor?

Back

Any living component that affects the population of another organism or the environment.

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What is an abiotic factor?

Back

Any non-living component that affects the environment, such as climate and soil.