Question

which statement best describes the flow of energy in an ecosystem?

energy is created and destroyed.
energy flows in one direction and is lost as heat.
energy never leaves the ecosystem.

Explanation:

In an ecosystem, energy flows from the sun to producers (like the plant) and then to consumers (mouse, snake, bird). Energy transfer is not 100% efficient; at each trophic level, some energy is lost as heat (due to metabolic processes). Energy is not created or destroyed (law of conservation of energy), and it does not cycle back in the same form - it moves in a one - way path through the ecosystem.

Answer:

Energy flows in one direction and is lost as heat.