Due to overfarming a field, the soil has become unsuitable for growing crops and is now covered with weeds. even the worms which would have been in restoring the soil's fertility, are gone. which interference most likely occurred

Gene flow and genetic drift both affect allele frequencies in a population. a high level of gene flow into a population genetic diversity in a population. a high level of gene flow out of a population genetic diversity in a population. genetic drift is the change in allele frequencies due to factors. typically, genetic drift has the biggest impact on populations.