1. What is Climate Change?


Earth warming
Long-term change in temperature & weather patterns, mostly due to human activities.
  • Climate vs Weather
  • Global Warming
  • Observable Changes
  • Nepal Context

2. Greenhouse Effect


Greenhouse effect
Natural process keeps Earth warm; enhanced by extra gases causes warming.
  • How it Works
  • Natural Greenhouse Effect
  • Enhanced Greenhouse Effect
  • Key Greenhouse Gases
  • Relevance to Nepal

3. Main Causes of Climate Change


Causes
Human activities since Industrial Revolution are the primary cause.
  • Fossil Fuels Burning
  • Deforestation
  • Industrial & Agricultural Activities
  • Methane from Livestock & Waste
  • Natural Causes

Natural vs Human Causes – Quick Comparison


Type Main Causes Time Scale Contribution to Recent Change Examples in Nepal/Context
NaturalSolar variation, volcanoes, orbital changesThousands–millions yearsMinor in last 150 yearsVolcanic ash, past ice ages
Human (Anthropogenic)Fossil fuels, deforestation, industry, agricultureSince ~1750 (Industrial Revolution)Major (~90–100% recent warming)Vehicles in cities, forest loss, brick kilns
Combined EffectEnhanced greenhouse gasesRapid in recent decadesObserved warmingHimalayan glacier melt, floods/droughts

📝 Climate Change and Its Causes Quiz (10 Questions)



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