@CONCACAF#CONCACAF - Friday, Feb 02, 2018 #CONCACAF #CCC2018 continues today with Real Hope FA v AtlÃ©tico Pantoja & W Connection FC v Arnett Gardens! Tune inâ¦
Building Blocks of The Earthâs Crust. Silicates are the most widespread of the minerals. They are made up of oxygen and silicon the number one and number two most abundant elements in the earth's crust. By themselves they make up over 90% of the weight of the earthâs crust. Most rocks are composed mainly of this class of minerals. There are two forms of silicate when looking at their chemistry:
Which of the following is the least abundant of the eight rock forming elements that make up most of the continental crust? iron; oxygen; aluminum; calcium; magnesium magnesium