Which of the following statements correctly describe trophic organization and levels within an ecosystem?
- Trophic organization represents the pattern of food relationships in an ecosystem.
- Producers, such as green plants, always occupy the first trophic level.
- Herbivores, which feed on producers, are positioned at the third trophic level.
- Trophic levels sequentially represent different feeding positions from producers to top consumers.
A2, 3
B1, 2
C4
D1, 2, 4