At a depth of 2,900 kilometers below the Earth's surface, P seismic waves slow down rapidly and S seismic waves disappear. This indicates that 2,900 kilometers is the beginning of which of the following layers?
W) Solid iron
X) Solid nickel
Y) Liquid iron and nickel
Z) Solid iron and nickel
✔️Answer:Y) LIQUID IRON AND NICKEL
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