Which one the following as a direct source of information about the interior of the earth?
a) Earthquake waves
b) volcanoes
c) gravitational force
d) earth magnetism
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sorry sis I don't know This
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Most of our informationabout earth's interiorhas come from seismic studies. Seismic waves produced during an earthquake are recorded by a seismograph when these waves reach the surface of the earth. There are two types of seismic waves- body waves and surface waves
Earthquake waves
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