C1CSE One Learn

General Studies Paper I · Subtopic

Climate change

Official syllabus

General issues on Environmental ecology, Bio-diversity and Climate Change - that do not require subject specialization.

UPSC CSE 2026 notification

What this covers

Climate refers to patterns over longer periods, while weather describes shorter-term conditions. Climate change can alter risks for ecosystems and people, but a single weather event is not by itself proof of a long-term trend.

Key ideas

  • weather
  • climate
  • driver
  • exposure
  • response

Official wording is from UPSC's Civil Services Examination 2026 notification, the current baseline for CSE 2027 preparation. Always check the latest notification at upsc.gov.in. Scopes and key ideas are CSE One's study map and are being expanded.