Homonym: Contaminant (Pollution)
A contaminant is any substance that makes something impure or unclean, often causing harm to the environment or human health. Contaminants can be found in air, water, soil, and food, and they can originate from various sources, including industrial processes, agricultural runoff, and waste disposal.
Common types of contaminants include heavy metals, pesticides, and microorganisms. These substances can lead to pollution, which poses risks to ecosystems and can affect the quality of life for living organisms. Monitoring and controlling contaminants is essential for maintaining a safe and healthy environment.