Question

1. why is an ecological pyramid smaller at the top than at the bottom?

100% of energy is transferred between organisms
only 10% of energy is transferred between organisms
only 50% of energy is transferred between organisms

Explanation:

The 10% law of energy transfer in an ecological pyramid states that only about 10% of the energy is transferred from one trophic level to the next. This is because most of the energy is used for metabolic processes (like respiration, movement, etc.) and lost as heat at each trophic level. So, as we move up the pyramid, the available energy decreases significantly.

Answer:

only 10% of energy is transferred between organisms