Question

when energy is transferred between living things, how much of the original energy is lost as heat? 10 percent 90 percent 30 percent 50 percent

Explanation:

In an energy transfer between living things (such as in a food chain), only about 10% of the energy is passed on to the next trophic level. The rest (about 90%) is lost as heat (due to metabolic processes like respiration, movement, etc.).

Answer:

90 percent