Q.

Which of the following is the lowest atmospheric layer?

A. Lithosphere
B. Stratosphere
C. Troposphere
D. Hydrosphere
Answer» C. Troposphere
Explanation: The troposphere is the lowest layer of Earth's atmosphere. It starts at Earth's surface and goes up to a height of 7 to 20 km above sea level. Most of the mass (about 75- 80%) of the atmosphere is in the troposphere. Almost all weather occurs within this layer.
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