The dominant element in the Earth’s crust is:Group of answer choicesSilicaOxygenIronPotassiumSilicon

Which of the following elements is the most abundant in Earth's crust?Group of answer choicesCarbonIronOxygenSilicon

The most abundant element in Earth’s Crust and Mantle isGroup of answer choicesIronOxygenSiliconAluminum

What is the most abundant element on the Earth?Group of answer choicescalciumoxygenaluminumsilica

Which of the following is found in the Earth's crust in its elemental state?ASilverBIronCCalciumDZinc

Which one of the following begins with the formation of the Earth?Group of answer choicesAbajozoicCenozoicCryptozoicMesozoicPaleozoicPhanerozoicPrecambrianProterozoic