Why Are Silicate Rocks the Most Common on Earth

question 33

Multiple Choice

Why are silicate rocks the most common on Earth?

• A) The most common minerals are silicates.
• B) Iron, oxygen, silicon and magnesium make up 91.2% of the Earth's mass.
• C) Oxygen, silicon, iron, and hydrogen make up 91.2% of the Earth's mass.
• D) Both a and b are correct.
• E) Both a and c are correct.

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