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.

**Step 1:** At the producer level, the energy is \[ 475650\ \text{kilocalories}. \] **Step 2:** Energy transfer efficiency is \(10\%\) (or \(0.10\)) at each trophic level. For the primary consumers (first trophic level consumers), the energy is \[ 475650 \times 0.10 = 47565\ \text{kilocalories}. \] **Step 3:** The second-level consumers (which are the consumers at the third trophic level) receive only \(10\%\) of the energy from the primary consumers. Therefore, the energy available is \[ 47565 \times 0.10 = 4756.5\ \text{kilocalories}. \] Thus, the energy available for the second-level consumers is \[ 4756.5\ \text{kilocalories}. \]