Answer: 10%.
- A 10%
- B 50%
- C 90%
- D 100%
Correct answer: A. 10%
Explanation: About 10% of energy transfers to the next level; the rest is lost as heat.
Energy pyramid showing a simple food chain (producer to herbivore to carnivore) with energy decreasing roughly tenfold at each trophic level.
Concept context
Ecosystems, food chains, energy flow, nutrient cycles, biodiversity, and conservation.