Smarty Pants Quiz
09
00
00
What is the most abundant element in Earth's crust?
Silicon
Aluminum
Iron
Oxygen
Wrong! Try again!
Oxygen is the predominant element in Earth's crust, making up over 46% of it's mass.
Easy peasy lemon squeezy! Try here!
09
00
00
What is the most abundant element in Earth's crust?
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