silicon and oxygen
Zinc.
Carbon
continental crust
Oxygen Silicon Sodium Potassium Magnesium Iron
it has been washed into the oceans as the continental crust has eroded.
Carbon
Carbon
Mercury.
The eight most common elements in the earths continental crust are; 1. Oxygen. 2. Silicon. 3. Aluminium. 4. Iron. 5. Calsium. 6. Sodium. 7. Potassium. 8. Magnesium.
Granite and basalt...... + a bunch of bugs n' stuff
Zinc.
Carbon
Carbon
thinner and denser
17 only
Carbon
continental crust