Most rocks are made of what elements?
1. lithium, nitrogen, selenium, fluorine, chlorine, antimony, gallium, tin
2. oxygen, silicon, aluminum, iron, calcium, sodium, potassium, magnesium
3. carbon, hydrogen, rubidium, nickel, zink, copper, lead, gallium
4. quartz, granite, marble, limestone, shale, sandstone, obsidian, mica
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Most rocks are made of what elements?
1. lithium, nitrogen, selenium, fluorine, chlorine, antimony,...
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