Question : Which part of the Earth has an abundance of nickel and iron?
Option 1: SIAL
Option 2: SIMA
Option 3: NIFE
Option 4: No option is correct.
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Correct Answer: NIFE
Solution : The correct answer is NIFE .
Layers of the earth are segregated according to their densities: the lightest forms the uppermost, i.e. crust, and the densest is the innermost layer, i.e. core. NIFE is the layer which is composed of Nickel and Iron. It forms the core of the earth. Earth's crust is composed of SIAL, which stands for Silicon and Aluminium, while the oceanic crust is formed of SIMA, i.e. Silicon and Magnesium.
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