Which of the Following Is the Most Abundant Gas in the Air

question 78

Multiple Choice

Which of the following is the most abundant gas in the air?

• A) oxygen (O₂)
• B) nitrogen (N₂)
• C) water vapor (H₂O)
• D) carbon dioxide (CO₂)
• E) hydrogen (H₂)

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Repression

A defense mechanism where distressing memories, thoughts, or impulses are excluded from conscious awareness.

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The probability or likelihood of developing cancer during one’s lifetime, influenced by genetic, environmental, and lifestyle factors.