Trophic efficiency is A) the ratio of net secondary production to ...

[penza]

Trophic efficiency is
A) the ratio of net secondary production to assimilation of primary production.
B) the percentage of production transferred from one trophic level to the next.
C) a measure of how nutrients are cycled from one trophic level to the next.
D) usually greater than production efficiencies.
E) about 90% in most ecosystems.

[plus1]

I recall doing this last year, it's B, bye bye!

[penza]

Thanks for assisting, your answer was right!