Internal. The ultimate sources of variation, the source of new heritable characteristics in populations and species, are due to mutation and recombination in chromosomes, genes, DNA.
Zone AE is the flood insurance rate zone that corresponds with flood depths greater than 3 feet. Mandatory flood insurance purchase requirements apply. Zone AH is the flood insurance rate zone that corresponds to areas of shallow flooding with average depths between 1 and 3 feet.
âFlood zone,â â100-year flood plainâ and â100-year flood eventâ are three phrases favored by the media and perpetuated by clients (and some agents). These over-simplified attempts to describe special flood hazard areas (SFHAâs) are incorrectly applied to the true exposure faced.