Answers

2015-07-28T20:30:16+08:00
Iron, 32 percent; oxygen, 30 percent; silicon, 15 percent; magnesium, 14 percent; sulfur, 3 percent; nickel, 2 percent; and trace amounts of calciumaluminumand other elements
1 5 1
2015-07-29T13:32:40+08:00
The mantle is mostly made of the elements Silicon, Oxygen, Iron and Magnesium.
1 5 1