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Lesson PreviewLesson 9 of 11 in this unit

1.9 Trophic Levels

Part of The Living World: Ecosystems in AP® Environmental Science. Read the opening section, then create a free account for the full interactive lesson, practice, and progress tracking.

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A trophic level is a feeding position in an ecosystem. All ecosystems depend on a continuous inflow of high-quality energy to maintain their structure.

In this unit

11 lessons

  1. 1.1Introduction to EcosystemsPreview lesson
  2. 1.2Terrestrial BiomesPreview lesson
  3. 1.3Aquatic BiomesPreview lesson
  4. 1.4The Carbon CyclePreview lesson
  5. 1.5The Nitrogen CyclePreview lesson
  6. 1.6The Phosphorus CyclePreview lesson
  7. 1.7The Hydrologic (Water) CyclePreview lesson
  8. 1.8Primary ProductivityPreview lesson
  9. 1.9Trophic LevelsThis lesson
  10. 1.10Energy Flow and the 10% RulePreview lesson
  11. 1.11Food Chains and Food WebsPreview lesson

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