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What main rocks is the crust made up of ?

+10 votes
287 views
asked Oct 29, 2014 in Science by Ria

I'm writing a science essay on the layers of the earth, so I need  to get more information on the crust. Thx.



1 Answer

+1 vote
answered Nov 8, 2014 by zippy (22,540 points)

This looks like a good link http://classroom.synonym.com/four-elements-make-up-almost-90-earth-2592.html

 

Most of the earth is made of iron at the core. Next is oxygen in the crust as part of silicate rocks. Third is silicon found in the mantle and crust. Fourth is magnesium found in both the crust and mantle.

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