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BiologyGrade 4en

๐Ÿ„ Decomposers and Nutrient Cycling

Learn about the organisms that break down dead plants and animals, and how they return valuable nutrients to the soil. Decomposers like bacteria, fungi, and earthworms play a vital role in keeping ecosystems healthy and balanced. **What you'll learn:** - Identify common decomposers and their characteristics - Explain how decomposers break down dead material - Describe the nutrient cycle and decomposers' role in it - Recognize why decomposers are essential for ecosystem health

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Questions in this quiz

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  1. Question 1

    Which of the following is a decomposer?

  2. Question 2

    What is the main job of decomposers in an ecosystem?

  3. Question 3

    Fungi are a type of decomposer that can break down dead wood and leaves.

  4. Question 4

    Earthworms are decomposers because they:

  5. Question 5

    Which organism is NOT a decomposer?

  6. Question 6

    Decomposers are not important for ecosystem health because they only deal with dead material.

  7. Question 7

    How do decomposers help return nutrients to soil?

  8. Question 8

    In the nutrient cycle, decomposers are responsible for the stage where:

  9. Question 9

    Bacteria can be seen without using a microscope.

  10. Question 10

    What happens to the nutrients in a dead leaf after decomposers break it down?

  11. Question 11

    Which of these is an example of a fungal decomposer?

  12. Question 12

    Without decomposers, nutrients would eventually run out in soil and ecosystems would struggle to survive.

  13. Question 13

    Decomposers are most active in environments that are:

  14. Question 14

    Which role do decomposers play in food chains and webs?