State any three ways of controlling noise pollution .

Explanation

**Step-by-Step Solution:**

1. **Understanding Noise Pollution**:
- Noise pollution refers to harmful or unpleasant sound waves that can cause discomfort or pain to human ears. It is typically generated from various sources such as traffic, industrial activities, loud music, etc.

2. **Identifying Sources of Noise Pollution**:
- Common sources of noise pollution include automobiles, heavy industries, traffic jams, and loudspeakers. Recognizing these sources helps in formulating strategies to control noise.

...