UPSC Mains 2024Question 15General Studies 1Geography250 words
What are aurora australis and aurora borealis? How are these triggered? (Answer in 250 words)
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Class 9Atmosphere and Climate— NCERT Social Science, Chapter 3. The atmosphere is a blanket of air held by gravity: by volume about 78% nitrogen, 21% oxygen, 0.93% argon and 0.04% carbon dioxide, with variable water vapour and dust.…
Class 11Composition and Structure of Atmosphere— NCERT Geography, Chapter 7. The atmosphere is a mixture of gases, water vapour and dust that envelops the earth; 99% of its mass lies within 32 km. Oxygen becomes negligible by 120 km; carbon…
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