അന്തരീക്ഷത്തിലെ നൈട്രജന്റെ വ്യാപ്തം ഏകദേശം എത്ര ശതമാനം?
A78.08
B21
C0.04%
D0.001%
A78.08
B21
C0.04%
D0.001%
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What is the primary cause of the twinkling or shimmering effect observed in some stars?
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