Question

why is it difficult to study the formation of the earth and its structure?
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Answer 1

$\huge\fbox\red{Answer}$

It is difficult to study the structure of the Earth because the crust is too thick to drill all the way through. scientists need to study seismic waves made by earthquakes or man-made explosions.

Answer 2

Answer:

It is difficult to study the structure of the Earth because the crust is too thick to drill all the way through. scientists need to study seismic waves made by earthquakes or man-made explosions

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