Question

approximately % of the available energy is passed from organisms at one trophic level to organisms at the next trophic level.

Explanation:

Step1: Recall Energy Transfer Rule

In ecological energy transfer (part of Biology, a Natural Science subfield), the typical energy transfer between trophic levels is known. The 10% rule states that approximately 10% of the energy from one trophic level is passed to the next.

Step2: Determine the Percentage

Based on the 10% energy transfer rule in ecosystems, the percentage of available energy passed between trophic levels is about 10.

Answer:

10