Singapore GCE A-Level H1 Geography Practice Questions - Singapore GCE A-Level H1 Geography (SEAB Syllabus 8834) Exam

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Which atmospheric gas contributes most significantly to the natural greenhouse effect due to its high atmospheric abundance?

Water vapor (H2O) Carbon dioxide (CO2) Methane (CH4) Nitrous oxide (N2O)

Correct Answer:

Water vapor (H2O)

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