Question: What covers over 90% of the Earth's surface and 0% of the moon's surface
Choices:
text: a magnesium iron silicate mineral
label: A
text: chemical element with the symbol S
label: B
text: the element with the symbol Fe
label: C
text: that which contains 2 hydrogen and 1 oxygen molecules
label: D
Answer: D
Fact: the moon does not contain water