Seismic waves traveling through the earth<span> refract for the same reason that light refracts when entering different substances (e.g. air, water). The inner </span>core<span>has a different density from the outer </span>core<span>, and this difference in density </span>tells<span> us that it is </span>solid<span>.
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Answer:
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Answer:
The Urals rise like a long and narrow spine across western Russia, forming a natural divide between Europe and Asia. The mountain range spans 2,500 kilometers (1,550 miles) passing through Arctic tundra to the north and through forested and semi-desert landscapes to the south
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