Answer: pyramid.
- A pyramid
- B circle
- C square
- D line
Correct answer: A. pyramid
Explanation: An ecological pyramid depicts numbers, biomass or energy at each level.
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.