4.7: Explain Why Only 10% of Energy is Transferred from One Trophic Level to the Next

TROPHIC LEVELS: Feeding Levels in a Food Chain

ENERGY IS LOST TO:

REASON	EXPLANATION
RESPIRATION	Respiration to Release Energy for Life Processes such as Movement or Heat Energy
NOT EATEN	Food May Not All be Eaten Such as Bones or Fibres
NOT DIGESTED	Food May Not be Digested, Resulting in Energy Lost to Faeces which are Broken Down by Decomposers
EXCRETED AS WASTE	Food Eaten is Broken Down and Excreted as Waste, E.g, Urea