What is the altitude of terai, hilly and himalayan region from the sea level?​

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Explanation:

The answer is 100 metres.

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100 meters

Explanation:

The elevation of the country ranges from less than 100 meters above sea level in the Terai, to the highest point on earth, the summit of Mt. Everest, at 8,848 meters, all within a distance of about 150km, resulting in climatic conditions ranging from sub-tropical to the Arctic.