Pollution refers to any undesirable change in the physical, chemical, or biological characteristics of air, water, or land that harms humans, animals, and other living organisms. It disrupts natural ecosystems and poses major health risks.
An undesirable change in the characteristics of air, water and land environment that is harmful to humans and living things is known as?
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Question context
This question is part of 📚 General Knowledge within the broader 🌐 Current Affairs & GK subject and appears in the PPSC Punjab Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.