Name any two sources that are creating a problem of pollution.

Explanation

### Step-by-Step Solution:

1. **Understanding Pollution**: Pollution refers to the undesirable changes in the physical, chemical, or biological characteristics of the environment that can be harmful to humans and other living organisms.

2. **Identifying Sources of Pollution**: To answer the question, we need to identify two specific sources that contribute to pollution.

3. **First Source - Industrial Sources**:
- Industries are significant contributors to various types of pollution, including air, water, and noise pollution.
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