We can't get direct information about the interior of the Earth because it is very difficult to reach the interior of the Earth because it is very hot.
because it too hot that even iron melts in the inner core
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Dipti Milind Patil answered this
To reach there is impossible because the temperature inside is too high.
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Vidya answered this
the correct answer is - we cant survive in the temperature of 100's of degrees. only a thin section of the earth's surface can be drilled and studied directly , the greater percentage at greater depths can only be studied indirectly
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Rocky answered this
why cant we get ditrct information about the interior of the earth