Pollution refers to the introduction of harmful substances or contaminants into the environment, resulting in adverse effects on ecosystems, human health, and natural resources. It can arise from various sources, both natural and human-made.

There are several types of pollution:

1. Air Pollution: Caused by emissions from vehicles, industrial discharges, and burning fossil fuels. It includes pollutants like carbon monoxide, sulfur dioxide, and particulate matter, contributing to respiratory issues and climate change.

2. Water Pollution: Occurs when harmful chemicals, waste, or pathogens contaminate water bodies. Sources include agricultural runoff, industrial discharges, and sewage. This type threatens aquatic life and human health.

3. Soil Pollution: Results from the disposal of waste, use of pesticides, and industrial activities. Contaminants degrade soil quality, affecting agriculture and ecosystems.

4. Noise Pollution: Arises from urban activities, transportation, and industrial operations. Prolonged exposure can lead to stress and health issues.

5. Light Pollution: Excessive artificial light disrupts ecosystems and human circadian rhythms, affecting wildlife and sleep patterns.

Addressing pollution requires collective efforts to promote sustainable practices and reduce harmful emissions.