Consider the following statements: 1. A11 the weather phenomena occur...
Troposphere is an essential layer of the atmosphere. All the weather phenomena like rainfall, fog and hailstorm occur in the troposphere. The air we breathe also exists in the troposphere.
Consider the following statements: 1. A11 the weather phenomena occur...
Understanding Weather Phenomena and Atmospheric Layers
The question revolves around the characteristics of different layers of the Earth's atmosphere, particularly the stratosphere and troposphere.
Statement 1: A11 the weather phenomena occurs in the stratosphere.
- This statement is **incorrect**.
- Weather phenomena such as clouds, rain, thunderstorms, and winds primarily occur in the **troposphere**, the lowest layer of the atmosphere.
- The stratosphere lies above the troposphere and is characterized by a stable atmosphere with very little weather activity.
Statement 2: The air we breathe exists in the troposphere.
- This statement is **correct**.
- The troposphere extends from the Earth's surface up to about 8-15 kilometers (5-9 miles) and contains approximately 75% of the atmosphere's mass.
- This layer is rich in oxygen and nitrogen, making it essential for life as it is where all the weather occurs and where we breathe the air.
Conclusion
- Based on the evaluation of both statements, the correct answer is **B: 2 only**.
- The first statement is false, while the second statement accurately describes the troposphere's role in providing breathable air.
This clarification highlights the importance of understanding atmospheric layers and their functions, especially for UPSC aspirants.