Question

What happens to the amount of energy as it moves up through an energy pyramid?

Answer 1

Answer: some energy is lost from the pyramid, energy is transferred from bottom (producers) to top, but in decreasing amounts.

Explanation: total energy is conserved, but not necessarily within the energy pyramid, which is an open system where energy is lost from the pyramid, mainly as heat but also as sound.

Energy is transferred up the pyramid but the amount transferred at each stage is less because of losses outside the pyramid.