ANSWER:
The correct option is A: Relative amounts of energy. In the ecological pyramid, the relative energy levels of each trophic level are displayed.
Step-by-step explanation:
- The pyramid is wider at the bottom or the lower trophic levels. This shows that this trophic level has more amount of energy available.
- The producers at lower trophic levels have more energy available to them as compared to those at higher levels.
- The relative energy also decreases as one moves up higher in the pyramid. The relative energy is least at the highest trophic level of the pyramid.