PLEASE HELP BEFORE IM LATE.... how have scientist been able to determine the composition of earths layer? earth science

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asked Jul 10, 2018 102k views

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Philihp Busby · Answer 1 · 2018-07-12T19:43:55+0000

Answer:

By looking at how seismic waves change speeds as they travel through Earth.

Step-by-step explanation:

By looking at how seismic waves change speeds as they travel through Earth.

APCM · Answer 2 · 2018-07-15T08:54:51+0000

Hi. Scienctists have been able to determine the composition of earth's layer because of how the seismic waves change speeds as they travel through Earth.

PLEASE HELP BEFORE IM LATE.... how have scientist been able to determine the composition of earths layer? earth science

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