What properties greater hardness in minerals?
a. smaller atoms and stronger bonds
b. larger atoms and weaker bonds
c. larger atoms and stronger bonds
d. smaller atoms and weaker bonds

I would like to believe that the correct answer from the choices listed above is option A. Atoms that are smaller and has stronger bonds will tend to result to a greater hardness in minerals. This is because the atoms are more bound to each other.

Amutation is basically the change in the gene, caused by alteration of single based units in the dna, or the genes or chromosomes were rearranged in the dna