The hazards of radiation belts include
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1) What is the upper limit of Richter scale?
2) The imaginary line on the earth's surface, which closely follows the 180 Âº meridian, is called the
3) The mountains which come into being after the continental drift started, with the break up of the large land mass of pangola are
4) The longest day (shortest night) in the southern hemisphere is
5) The major cause of species extinction is