Chemistry, 19.05.2020 16:18 griffislandon74

5 Points
How have scientists been able to determine the composition of Earth's
layers?
A. By studying the magnetic fields of various planets and moons
B. By looking at how seismic waves change speeds as they travel
through Earth
C. By looking at how X-rays affect the planet
D. By studying layers of other planets and moons
CUIDAIT

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How have scientists been able to determine the composition of Earth's
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