Question

what happens to the energy when it is passed on to each trophic level? it remains constant, it transforms into matter, it decreases, it increases,

Explanation:

Energy transfer between trophic levels follows the 10% rule: only ~10% of energy moves to the next level. Most energy is lost as heat, used for organism metabolism, or remains in undigested matter, so available energy decreases at each higher trophic level.

Answer:

It decreases.