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Changes in the climate have been observed at the global level, through the measurements of temperature at the surface and the middle atmosphere. There has been an increase in sea level, sea surface temperature, ocean heat and water vapor in atmosphere. The atmospheric concentrations of carbon dioxide, methane and nitrous oxide have increased unprecedentedly in … Read more

A mountain is a landform that rises high above the surrounding terrain in a limited area. Mountains are composed of rocks and earth. Generally, mountains are higher than 600 metres. The ones which are less than 600 metres are called hills. A mountain range is a group or chain of mountains which are located close … Read more

The political map of Asia depicts large parts of Asia with the exception of some countries i Western Asia and the Middle East. Asia is the largest of the world’s continents. It constitutes nearly one-third of the Earth’s landmass and lies north of the equator except for some Southeast Asian islands. Asia is connected to … Read more