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| Q.1 | Which is the correct decreasing order of abundance of elements in the atmosphere of Earth? | |
| Ans | A. Nitrogen, oxygen, argon, carbon dioxide | |
| B. Nitrogen, oxygen, carbon dioxide, argon | ||
| C. Nitrogen, argon, oxygen, carbon dioxide | ||
| D. Oxygen, nitrogen, argon, carbon dioxide |
Correct Ans Provided: A
