Explain the following:
Pollution

Explanation

### Step-by-Step Text Solution:

1. **Definition of Pollution**: Pollution refers to an undesirable change in the physical, chemical, or biological aspects of the environment. This change makes the environment harmful to humans and other living organisms.

2. **Types of Pollution**:
- **Air Pollution**: This involves the presence of harmful gases and particles in the air that degrade air quality. Common pollutants include carbon monoxide, sulfur dioxide, and particulate matter.
- **Water Pollution**: This occurs when harmful substances, such as chemicals or pathogens, contaminate water bodies. For example, cadmium in drinking water can lead to serious health issues.
- **Soil Pollution**: This is caused by the presence of toxic chemicals or increased salinity in the soil, which can reduce soil fertility and harm plant life.
...