State one safety precaution in the disposal of nuclear waste.

Explanation

**Step-by-Step Solution:**

1. **Understand the Context**: Nuclear waste is a byproduct of nuclear reactions and can be highly radioactive, posing risks to human health and the environment.

2. **Identify Safety Precautions**: One of the key safety precautions in the disposal of nuclear waste is to ensure that it is contained properly.

3. **Proper Containment**: Dispose of all radioactive nuclear waste in appropriate containers that are designed to prevent leakage and radiation exposure.

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