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.
This totally depends on the flood zone of the property. There are areas on James Island that are not considered in a flood zone. However, that does not mean a flood will not occur with a hurricane of direct impact if at high tide. If the house is elevated on pilings, or in a flood zone of AE, this can impact the cost. It all depends on the elevation about the base flood level. Looke at www. FEMA.gov. Mortgage lenders require flood insurance unless in zone X.