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Major Domains of the Earth — Social Science STD 6 — Question

Rajasthan BoardEnglish MediumSTD 6Social ScienceMajor Domains of the Earth5 Marks
Question
Examine the composition of atmosphere.
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Answer

  1. The atmosphere is composed mainly of nitrogen and oxygen, which make up about 99 percent of clean, dry air.
  2. Nitrogen 78 percent, oxygen 21 percent and other gases like carbon dioxide, argon and others comprise 1 percent.
  3. Oxygen is the life-giving gas, nitrogen helps in the growth of living organisms.
  4. Carbon dioxide is important as it absorbs heat radiated by earth, thereby keeping the planet warm.

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