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 VE is the flood insurance rate zone that corresponds to coastal areas that have additional hazards associated with storm waves. Mandatory flood insurance requirements apply. Zone X and Zone X-500 are flood insurance rate zones that are outside the flood plain or with average flood depths of less than 1 foot.
Property in this special flood hazard area is subject to flooding from rising water and wave action during a 1% chance storm. Properties in this flood zone are required to be elevated to a designated height and all enclosures below the designated height are required to have break-away walls.roperty is not in the special flood hazard area but is subject to flooding from rising water during a 0.2 % chance storm. There are no required elevations for properties in this flood zone.