science
Grade-5
Easy

Question

In a food pyramid, how much energy is lost from trophic level to trophic level?

  1. 20%
  2. 70%
  3. 50%
  4. 90%

hintHint:

The amount of energy at each trophic level decreases as it moves through an ecosystem.

The correct answer is: 90%


    • Each trophic level's energy content diminishes as it progresses through an ecosystem.
    • 90% of the energy used by an organism is lost as heat during respiration, digesting, etc.
    • Only 10% of the energy is transferred to the next level at each level of the food chain.

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