10000 K cal energy is available at the level of producers, calculate the amount of energy at the level of secondary consumer.

Explanation

To solve the problem of calculating the amount of energy available at the level of secondary consumers when 10,000 Kcal of energy is available at the level of producers, we will follow these steps:

### Step-by-Step Solution:

1. **Understanding the Energy Transfer**:
- In a food chain, energy is transferred from one trophic level to the next. The first trophic level consists of producers, the second level consists of primary consumers, the third level consists of secondary consumers, and so on.

2. **Applying the 10% Rule**:
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