Answer :
Final answer:
Water pollution is the contamination of water by harmful substances that can harm humans and ecosystems, coming from various sources and activities.
Explanation:
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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