Download Class 7 Geography MCQs App Download | Air and Water Pollution e-Book PDF
Class 7 Geography Competitive Exam: Practice Test 5 (Chapter 1)
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The way in which plants die because of dropped level of oxygen is classified as
The addition of harmful substances that has bad effects on environment and living things is classified as
The poisonous substances that can be present in industrial wastes does not includes
The Kyoto Protocol agreement was signed in
The document that was drafted by India, Brazil, China, United States and South Africa at meeting under UNFCCC is classified as
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