- (A) 10%
- (B) 21%
- (C) 30%
- (D) 45%
_______ is considered the largest glacier of Pakistan.
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- (A) Siachen Glacier
- (B) Tirich Mir Glacier
- (C) Biafo Glacier
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Oxygen by volume has a presence in the atmosphere of about:
Oxygen by volume has a presence in the atmosphere of about:
Oxygen makes up about 20.95% by volume in the Earth’s atmosphere, which is rounded to 21%. It is the second most abundant component in dry air, behind nitrogen at about 78%.
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