Answer: A grassland.
- A A pond
- B A forest
- C A parasitic
- D A grassland
Correct answer: D. A grassland
Explanation: A grassland shows an upright pyramid of numbers - many producer grasses support fewer herbivores and still fewer carnivores.
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.