Which of the following statements is true about troposphere?
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Correct Answer: Option A
Detailed Explanation:
✅ Statement 1 – Correct: The troposphere has an average height of 13 km (varies from 8 km at poles to 18 km at equator).
❌ Statement 2 – Incorrect: The troposphere is the lowest layer of the atmosphere, not the topmost; the exosphere is the outermost layer.
❌ Statement 3 – Incorrect: Temperature in the troposphere decreases with height at a rate of approximately 6.5°C per km (normal lapse rate).
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