lizzurita25 lizzurita25

06-04-2015
Geography

Answered

Which elements are found in a high proportion in Earth’s crust?

A.aluminum and iron

B.oxygen and silicon

C.calcium and sodium

D.potassium and magnesium

Answer :

acharlia2004 acharlia2004

06-04-2015

i think its calcium and sodium I'm not sure

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Аноним Аноним

06-04-2015

Basically, this is a tricky question. And it has more than one answer. The elements that are found in a high proportion in Earth's crust are oxygen, aluminium, iron, calcium, potassium, sodium, and magnesium. But for your Option, I think it is B) Oxygen and Silicon. This is because Oxygen makes 46.6% while Silicon makes 27.7% of the Earth crust. They are like the highest.

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