7 th Grade Science Food Webs and Chains - PowerPoint Presentation

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Uploaded On 2018-09-22

7 th Grade Science Food Webs and Chains - PPT Presentation

Objectives Define and give examples of organisms at different trophic levels Describe how energy flows in a food chain Explain why producers must outnumber consumers in a balanced ecosystem ID: 675041

food energy ecosystem consumers energy food consumers ecosystem producers eat consumer outnumber trophic primary organisms level secondary herbivores balanced

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