Question

which level of the ecosystem contains the least amount of energy?
secondary consumers
primary consumers
tertiary consumers
producers

Explanation:

Energy decreases as we move up the trophic levels in an ecosystem. Producers are at the base and have the most energy. Primary consumers eat producers, secondary consumers eat primary consumers, and tertiary consumers are at the top - most trophic level. As energy is lost at each transfer between trophic levels, tertiary consumers have the least energy.

Answer:

tertiary consumers