environment hard MCQ

Which of the following feedback mechanisms can accelerate global warming?

  1. Increased cloud cover reflecting sunlight
  2. Melting of Arctic sea ice reducing albedo
  3. Enhanced plant growth absorbing more CO2
  4. Formation of sulfate aerosols

Answer: Melting of Arctic sea ice reducing albedo

As ice melts, darker ocean water absorbs more solar radiation, causing further warming—a positive feedback loop.

Topic Climate Change
Exam Relevance UPSC