science
Grade-5
Easy
Question
In a food pyramid, how much energy is lost from trophic level to trophic level?
- 20%
- 70%
- 50%
- 90%
Hint:
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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