Chapter 2: Earth Science Exam Tests
Earth Science MCQs - Chapter 2
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MCQ 6: The gas which has percentage equal to 78% in air is the
MCQ 7: Thermosphere as compare to troposphere is
MCQ 8: Ozone has been depleted due to
MCQ 9: Earth has tendency to absorb the energy from sun which is
MCQ 10: The mixture of gases around us is regarded as
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