Hydrogen and helium.
Oxygen and silicon are the two most abundant elements found in the most common minerals. The most common minerals found on Earth are silicates.
Carbon
In the earth crust: silicon, aluminium, oxygen.
Hydrogen, Carbon, Oxygen, and Silica are the most common elements found in the Earth.
In the Earth's crust, the most common elements are: Oxygen 46.1% Silicon 28.2% Aluminum 8.23% Iron 5.63% Calcium 4.15% Sodium 2.36% Magnesium 2.33% Potassium 2.09% Titanium 0.565% Hydrogen 0.14% In the atmosphere, the most common elements are Nitrogen and Oxygen. Since the core of the Earth is believed to be mostly iron, that would be the most common element in the entire planet.
In the crust on which we live, oxygen is the most common element. In the Earth as a whole, iron is the most common element.
Carbon
Hydrogen is the most common element in the universe. Helium, Oxygen, silicon, and aluminum are the next most common elements in the universe and on earth.
Oxygen and silicon are the two most abundant elements found in the most common minerals. The most common minerals found on Earth are silicates.
One is silicon, but I don't know the other:(oxygen
Dirt and Dirt!
Carbon
Oxygen, silicon, aluminum, iron, calcium, sodium, potassium, and magnesium are the most common elements found in Earth's continental crust.
The most common element in the earth's crust is oxygen.
Helium is not one of the 8 most common elements in Earth's continental crust. The 8 most common elements are oxygen, silicon, aluminum, iron, calcium, sodium, potassium, and magnesium. Helium is a noble gas and is not as abundant in Earth's crust compared to these elements.
In the earth crust: silicon, aluminium, oxygen.
Carbon