The pyramid that cannot be inverted in a stable ecosystem is the pyramid of:
Correct answer: A. Energy
- A. Energy
- B. Number
- C. Biomass
- D. All of these
Explanation
The pyramid of energy is always upright because energy is lost as heat at every trophic transfer, so each higher level contains less energy than the level below. Pyramids of number and biomass can sometimes be inverted.
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