Question

which trophic level is generally the smallest in a terrestrial ecosystem? secondary consumer primary consumer producer tertiary consumer

Explanation:

In a terrestrial ecosystem, energy transfer follows the 10 - 20% rule. Tertiary consumers are at the top of the food chain and receive the least amount of energy. As a result, their population size is generally the smallest compared to other trophic levels like producers, primary consumers, and secondary consumers.

Answer:

D. Tertiary consumer