State the safe limit of sound level in terms of decibel for human hearing.

Explanation

To determine the safe limit of sound level for human hearing in terms of decibels (dB), we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Human Hearing Range**:
- Humans can hear sounds in the frequency range of 20 Hz to 20,000 Hz. This is important to note as it defines the audible range for humans.

2. **Identifying Safe Sound Levels**:
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