<Li> Assimilation efficiency is the amount of assimilation divided by the amount of food ingestion (A n / I n (\ displaystyle A_ (n) / I_ (n))) </Li> <Li> Net Production efficiency is the amount of consumer production divided by the amount of assimilation (P n / A n (\ displaystyle P_ (n) / A_ (n))) </Li> <Li> Gross Production efficiency is the assimilation efficiency multiplied by the net production efficiency, which is equivalent to the amount of consumer production divided by amount of ingestion (P n / I n (\ displaystyle P_ (n) / I_ (n))) </Li> <Li> Ecological efficiency is the exploitation efficiency multiplied by the assimilation efficiency multiplied by the net production efficiency, which is equivalent to the amount of consumer production divided by the amount of prey production (P n / P n − 1 (\ displaystyle P_ (n) / P_ (n - 1))) </Li>

10 law of transfer of energy in food chain