In this model, why do the higher trophic levels have far less energy available to them than the producers do?
At each transfer most of the energy is used in life processes and released as heat✓پاسخ درست
Organisms at higher levels refuse most of the food that is available to them
Producers store their energy in a form that cannot be eaten at all
Energy is destroyed every time one organism eats another
توضیح
Most of the energy at a level powers respiration, movement and other life processes and leaves the web as heat, so only a small share is passed on as body tissue. The claim that energy is destroyed fails, because energy is never destroyed; it simply changes form and escapes as heat.