The minerals diamond and quartz can both be colorless. However, diamond will scratch quartz, while quartz will not scratch diamond. This is because each has a different . A.
streak color
B.
hardness
C.
breakage pattern
D.
crystal structure

B

Explanation:

Diamond is the highest on the hardness scale, while quartz is lower, only a diamond can scratch a diamond

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the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.