Answer: Habitat.
- A Niche
- B Habitat
- C Biome
- D Ecosystem
Correct answer: B. Habitat
Explanation: Habitat is the place where an organism lives (its physical home). Niche refers to its role in the ecosystem.
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.