Answer: Detritus food chain.
- A Grazing food chain
- B Predator food chain
- C Detritus food chain
- D Producer food chain
Correct answer: C. Detritus food chain
Explanation: The detritus food chain (DFC) starts from dead organic matter consumed by detritivores and decomposers, unlike the grazing food chain that starts with living plants.
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.