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LekaFEV [45]
3 years ago
11

A human fingernail has a hardness of approximately 2.5. Which mineral is softer than a finger nail. A. calcite B. gypsum C. apat

ite D. diamond
Biology
2 answers:
Fofino [41]3 years ago
4 0
That answer would be, B. gypsum




-Nana
denis23 [38]3 years ago
3 0
According to the 2011 Earth Science Reference Table, Selenite Gypsum has an approximate hardness of 2.

The hardness of calcite is 3.

The hardness of apatite is 5 according to the Moh's hardness scale.

The hardness of diamond is 10.
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