Next \( \Theta \) Relationships in Ecosystems: Mastery Test Type the correct answer in the box. In an energy pyramid, the amount of energy at the producer level is 475,650 kilocalories. The pyramid has four trophic levels, including the producer level. Assuming that \( 10 \% \) of the energy is retained at every lefvel, how much energy is available for the second-level consumers? The energy available for the second-level consumers is kilocalories.

To find the energy available for the second-level consumers, we must first calculate the energy available at each level of the energy pyramid, knowing that only \( 10\% \) of the energy is retained at each successive trophic level. 1. **Producers (1st level):** 475,650 kilocalories 2. **Primary Consumers (2nd level):** \( 475,650 \times 0.10 = 47,565 \) kilocalories 3. **Secondary Consumers (3rd level):** \( 47,565 \times 0.10 = 4,756.5 \) kilocalories Therefore, the energy available for the second-level consumers (which is actually the third trophic level) is approximately **4,756.5 kilocalories**.