In order to go from Calicut to Sofalais, A trader has to travel 3200 km through boat.
Answer:
The main gases which play an important role in maintaining the temperature of the atmosphere are carbon dioxide and the water vapours. As the altitude increases, the concentration of these gases in the atmosphere decreases (due to gravity), which consequently results in decrease of temperature, which means there is not enough CO2 and water vapours to keep increasing the temperature.
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Once sand<span> begins to pile up, ripples and </span>dunes<span> can form. Wind continues to move</span>sand<span> up to the top of the pile until the pile is so steep that it collapses under its own weight. The collapsing </span>sand<span> comes to rest when it reaches just the right steepness to keep the </span>dune<span> stable.</span>