Final Exam Review (Fall, Environmental Science)

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What is a hypothesis?

Back

A statement of a prediction that can be tested.

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What is an ecosystem?

Back

A community of living organisms interacting with their physical environment.

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What is a community in ecological terms?

Back

A group of different species living together in one area.

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What is the primary source of energy for life on Earth?

Back

The sun.

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What is the 10% rule in ecology?

Back

When energy flows from one trophic level to the next, only 10% is transferred; the other 90% is lost as heat.

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What is mutualism?

Back

A type of symbiosis where both species benefit.

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What is commensalism?

Back

A type of symbiosis where one species benefits and the other is neither helped nor harmed.

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What is parasitism?

Back

A type of symbiosis where one species benefits at the expense of the other.

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What are producers in an ecosystem?

Back

Organisms that produce their own food, typically through photosynthesis.

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What are consumers in an ecosystem?

Back

Organisms that obtain energy by consuming other organisms.