Pluto s density is 1.8 g/cm 3 . Iron is about 5 g/cm 3 . Rock is about is 3 g/cm 3 . Ice or water is 1.0 g/cm 3 . . This implies that
A) Pluto has a large iron-nickel core.
B) Pluto is about 50% water and 50% rocky material.
C) Pluto is all rock.
D) Pluto is all water or water ice.
Correct Answer:
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