The principal constituent of the earth?s core is believed to
be:

(a) iron

(b) nickel

(c) silicon

(d) olivine

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The principal constituent of the earth?s core is believed to be: (a) iron (b) nickel (c..

Answer / guest

( a ) iron

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The principal constituent of the earth?s core is believed to be: (a) iron (b) nickel (c..

Answer / joydeb pramanick

B) Nikel

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