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At 670 km below the earth's surface, seismic waves speed-up because:?

A they are refracted
B they are reflected
C density decreases
D density increases
E pressure decreases

2006-10-04 15:47:26 · 1 answers · asked by Feline Friend 1 in Education & Reference ➔ Other - Education

1 answers

A They are refracted

See the link below:

2006-10-08 08:19:19 · answer #1 · answered by Teacher Man 6 · 0⤊ 0⤋

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