Pollution refers to the introduction of contaminants into the natural environment that cause adverse changes. The major types of pollution include:

Air Pollution: The release of harmful chemicals, particulates, and gases like carbon monoxide, sulfur dioxide, and nitrogen oxides into the atmosphere, often from industrial and vehicle emissions.

Water Pollution: The contamination of water bodies like oceans, rivers, and groundwater by substances such as chemicals, sewage, and microplastics.

Soil Pollution: The degradation of land from the presence of man-made chemicals, waste, or other alterations that are harmful to living organisms.

Noise Pollution: Excessive or unpleasant sounds that disrupt the environment, often from transportation, industrial machinery, and human activities.

Other types of pollution include radioactive, thermal, light, and plastic pollution. Pollution can have widespread negative impacts on the environment, human health, and ecosystems. Human activities like industrialization, urbanization, and transportation are major contributors to various forms of pollution worldwide.