Social Sciences, asked by brainlydishita, 10 months ago

75% of earth's crust is composed of
a) silica and oxygen
b) silica and aluminium
c) silica and magnesium
d) silica and iron

Answers

Answered by Anonymous

1

Answer:

heya...

Explanation:

ur ans is silica a nd oxygen.....

have a great day!!

Answered by jyotismita76

1

Explanation:

silica and oxygen..........

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