Biosphere Review

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Energy transfer in ecosystems

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Energy flows through ecosystems, with each organism receiving about 10% of the energy available in the level below.

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What is Secondary Succession?

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Secondary succession occurs when a disturbance (like a fire) destroys a community but leaves the soil intact, allowing for recovery and regrowth.

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Definition of a Keystone Species

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A keystone species is crucial for maintaining the ecological balance in an ecosystem.

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Who is a Secondary Consumer?

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A secondary consumer is an organism that eats primary consumers; for example, a hawk.

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Who is a Primary Consumer?

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A primary consumer is an organism that eats producers; for example, a grasshopper.

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Definition of a Producer

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Producers are organisms that create their own food through photosynthesis, such as plants.

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What is a Trophic Level?

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A trophic level is a position in a food chain or food web, representing the flow of energy and nutrients.

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Role of Decomposers

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Decomposers break down dead organic matter, recycling nutrients back into the ecosystem.

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What is Biodiversity?

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Biodiversity refers to the variety of life in a particular habitat or ecosystem.

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Definition of an Ecosystem

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An ecosystem is a community of living organisms interacting with their physical environment.