Answer: ecological succession.
- A ecological succession
- B simple predation
- C fierce competition
- D animal migration
Correct answer: A. ecological succession
Explanation: Ecological succession is the sequential change in communities in an area.
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.