Q1
Deforestation mainly leads to:
Adisrupted ecosystems and reduced oxygen production
Bincreased oxygen production
Cimproved wildlife habitats
Dno environmental effect
CBSEClass 8 (CBSE)ScienceCh 13 · Topic 2
Human Impact on Earth's Systems
Learning how human activities affect Earth's natural balance.
Core concept
Overexploitation of resources — such as overfishing or excessive groundwater extraction — depletes resources faster than they can replenish, threatening long-term availability. Climate change, driven largely by human-caused greenhouse gas emissions, is altering weather patterns, melting polar ice, and raising sea levels globally. Addressing these impacts requires collective action, including sustainable resource use, pollution control, reforestation efforts, and international cooperation on climate policies.
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• Deforestation disrupts climate patterns and destroys wildlife habitats.
• Pollution from industry, vehicles, and waste harms air, water, soil, and health.
• Overexploitation (overfishing, excess groundwater use) depletes resources unsustainably.
• Climate change, driven by human emissions, is altering global weather patterns and sea levels.