Assertion (A): The pyramid of energy is always upright, never inverted.
Reason (R): When energy flows from a particular trophic level to the next, some energy is always lost as heat at each step.
Assertion (A): The pyramid of energy is always upright, never inverted.
Reason (R): When energy flows from a particular trophic level to the next, some energy is always lost as heat at each step.