Answer: 10%.
- A 1%
- B 10%
- C 50%
- D 90%
Correct answer: B. 10%
Explanation: 10% law (Lindemann): only about 10% of energy from one trophic level is available to the next. 90% is lost as heat and respiration.
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.