Question

Other than Oxygen (O₂) and Calcium (Ca), 92% of earth's crust is made up of

a.

silicon

b.

Iron

c.

Aluminum

d.

all of the above

Posted under Chemistry

Answer: (d).all of the above

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Q. Other than Oxygen (O₂) and Calcium (Ca), 92% of earth's crust is made up of

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