Multi-select: Knowing that "the moon does not contain water", how would one answer "What covers over 90% of the Earth's surface and 0% of the moon's surface"

Possible answers:
- a magnesium iron silicate mineral;
- chemical element with the symbol S;
- the element with the symbol Fe;
- that which contains 2 hydrogen and 1 oxygen molecules;...A:
that which contains 2 hydrogen and 1 oxygen molecules