Water pollution is the contamination of water by harmful substances that can harm humans and ecosystems, coming from various sources and activities.
Water pollution is the contamination of water by an excess amount of a substance that can cause harm to human beings and/or the ecosystem. Contaminants can come from biological, chemical, or physical processes, and are often derived from human, land-based activities. The types of water pollution include chemical pollution (toxic metals, organic compounds), physical pollution (trash, thermal pollution), and biological pollution (pathogenic bacteria, viruses).
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