Unit #1 Review A

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Consumer that eats plants

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Herbivore: An organism that primarily consumes plants for energy.

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Step in the food chain, food web, or ecological pyramid

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Trophic Level: A position in a food chain or food web that indicates the flow of energy.

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Living factors or organisms that affect an ecosystem

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Biotic Factors: The living components of an ecosystem, such as plants, animals, and microorganisms.

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Organism that makes its own food by using sunlight or chemicals; autotroph

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Producer: An organism that can create its own food through photosynthesis or chemosynthesis.

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Network of all food in an ecosystem

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Food Web: A complex network of feeding relationships among various organisms in an ecosystem.

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Organisms that break down dead organic material

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Decomposers: Organisms, such as fungi and bacteria, that decompose dead matter and recycle nutrients back into the ecosystem.

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The role of an organism in its environment

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Niche: The specific function or role of a species within an ecosystem.

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The non-living components of an ecosystem

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Abiotic Factors: The physical and chemical elements in the environment, such as sunlight, water, and minerals.

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A group of individuals of the same species living in a specific area

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Population: A collection of individuals of the same species that inhabit a particular area.

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The variety of life in a particular habitat or ecosystem

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Biodiversity: The range of different species and genetic variations within a given ecosystem.