Geographic hot spots are areas with high diversity and high numbers of . Diversity of hot spots is determined primarily by the number of species in the area, with the assumption that there is a positive relationship between the diversity of primary producers and the number of species that can be supported. In addition to the diversity at a specific site, a hot spot is also determined by the of the area. If more than of the habitat has been destroyed or altered, the site is considered a hot spot for conservation biology.