In the following food chain, 5 J of energy is available to man. How much energy was available at producer level ?
Plants cheetah Man

Explanation

To solve the problem of how much energy was available at the producer level when 5 J of energy is available to man, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Energy Transfer in Food Chains**:
In a food chain, energy is transferred from one trophic level to the next. According to the 10% rule of energy transfer, only about 10% of the energy from one level is passed on to the next level.

2. **Identify the Trophic Levels**:
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