Compared to the Western Ghats the Himalayas are more prone to landslides and debris avalanches Why 1...........

Geography Earth Geology

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Compared to the Western Ghats, the Himalayas are more prone to landslides and debris avalanches. Why?

1. Relative to the Western Ghats, the Himalayas are tectonically unstable.

2. Himalayas receive heavier rains than the Western Ghats thereby making them more prone to these events.

3. The Himalayas are made up of sedimentary rocks and semi-unconsolidated deposits.

Select the correct answer using the codes given below

1 and 2 only

2 and 3 only

1 and 3 only

All of the above

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Explanation:

The first statement is true because the Himalayas being at the plate margins of the Eurasian and Indian plates are seismically active (the recent Nepal quake is an example)
The second statement is incorrect because on an average, the western ghats do receive more rains than the Himalayas. The Garo, Khasi and Jaintia Hills receive heavier rainfall than western ghats , but geologically they are an extension of the Deccan plateau and not a part of the Himalayas.
The third statement is correct.