Explain how natural selection could lead to change in allele

It can cause microevolution, or a change in allele frequencies over time, with fitness-increasing alleles becoming more common in the population over generations. It refers to how many offspring organisms of a particular genotype or phenotype leave in the next generation, relative to others in the group.

If you don’t no the vocabulary in this , don’t worry :/... zzz

Just look up the definitions and you’ll be fine :)