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  1. Through these worksheets, students will learn about the different types of ecological pyramids: the pyramid of energy, pyramid of numbers, and biomass pyramid, and the information they provide about the trophic levels and population sizes within an ecosystem.

  2. This worksheet contains everything you need in order to use this resource outside of the classroom, either as homework or as a home learning activity. With an included answer sheet you can mark and track your students' progress as they work to complete their understanding of trophic levels.

  3. Make predictions about the biomass relationships between trophic levels in an ecosystem. • Analyze quantitative data to create a biomass pyramid. • Describe the relationships between trophic levels and between ecosystems based on the shape of a biomass pyramid. •

  4. Read about the transfer of energy through the trophic levels and carefully and completely answer the following questions: A) What is the original source of energy for most living organisms?

  5. Discuss what trophic level humans can occupy on an ecological pyramid, and explain what happens to contaminants and environmental pollution (such as mercury) as you move down and up the ecological pyramid

  6. Energy Pyramids show the loss of energy through an ecosystem. 4th Trophic Level = ________________. 3rd Trophic Level = ________________. 2nd Trophic Level = ________________. 1st Trophic Level = ________________. Place the organisms in each food chain into the proper location on the energy pyramid. 1.

  7. Ecological pyramids are diagrams that show the relationships between trophic levels and the position of species among trophic levels. Ecological pyramids can represent a variety of relationships, such as the numbers of organisms (numbers pyramid), energy flow (energy pyramid), or biomass of organisms (biomass pyramid).