HP Which is not a factor in calculating the moment magnitude of an earthquake?

magnitude of past earthquakes in the area

rigidity of rock in the area

average displacement along a fault

surface area of a fault

Transposon can cause mutations in genes at or near the site of transposon insertion. it is possible for these elements to transpose away from their original site, causing a reversion of the mutant phenotype. in some cases, however, even more severe phenotypes appear when these elements excise from this site, due to events at or near the mutant allele. what might be happening to the transposon or the nearby gene to create more severe mutations?