The transfer of energy between trophic levels averages about what percent?

The correct answer 10%. Only 10% of the total energy is transferred to the next trophic level.

While energy moving from the one trophic ;level to another is lost in many processes.

The transfer is not the 100% due to some reasons like the maintenance of that trophic level.

90 Percent of the produced energy is used in the reproduction of the organisms, their growth, in respiration , movement fighting and other life maintaining processes.

Hence only 10% energy is reached to next trophic level.

i tried the eyeshadow trick you told me about and it worked so good i i did a yellow going into orange colors and it was bright and you could see it on my eyes

"do a testcross with a homozygous recessive plant."