Question

of all of the energy that enters an ecosystem, what amount eventually leaves the ecosystem? only a very tiny amount ever leaves the ecosystem. none of the energy ever leaves the ecosystem. all of the energy eventually leaves the ecosystem.

Explanation:

In an ecosystem, energy enters mainly through photosynthesis by producers. As energy is transferred through trophic levels via consumption and metabolic processes, it is gradually lost as heat. Eventually, all the energy that enters the ecosystem leaves it in the form of heat.

Answer:

ALL of the energy eventually leaves the ecosystem.