Solve this multiple-choice question and choose the correct option.

Atmospheric composition (GK): What is the major constituent of dry air near sea level by volume? Choose the correct option.

Difficulty: Easy

Oxygen (~21%)
Nitrogen (~78%)
Carbon dioxide (~0.04%)
Argon (~0.93%)

Correct Answer: Nitrogen (~78%)

Explanation:

ConceptDry air near sea level is composed primarily of nitrogen (~78%), then oxygen (~21%), argon (~0.93%), and trace gases including CO₂.

Final AnswerNitrogen (~78%)

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