Nitrogen - 14 and nitrogen - 15 are isotopes of the same element. How do these isotopes differ

As a small change in a person's dna can cause a genetic disorder

The spermists believed that: the male made the only hereditary contribution to the offspring the male and female traits were blended in the offspring the female made the only hereditary contribution to the offspring the male and the female made equal contributions to the next generation

In the sentence "a mining company will consider the distribution of coal when deciding how to mine the coal," what does the word distribution mean?