Ignition Component fuel moisture (FFM) which expresses the effective moisture content of the fine fuels. The closer the initial temperature of the fuel is to the ignition temperature, the more likely a fire will result when a firebrand in introduced into the fine fuel complex, since not a much energy is required to raise the fuel particle to its ignition temperature. Ignition Component The Ignition Component is a number which relates the probability that a fire will result if a firebrand is introduced into a fine fuel complex. The ignition component can range from 0 when conditions are cool and damp, to
Mesoamerican Archaic period differed regionally. Most Archaic sites are not very well preserved or visible, which hampers archaeologists' ability to discover and study Archaic period sites. As a result, not many Archaic sites have been identified, although major sites like Guilá Naquitz and Colha have been explored by archaeologists. Most known Archaic sites are in the Mesoamerican highlands or along the coasts, though there are sites throughout the region. During the Archaic period, Mesoamerican peoples slowly changed from being nomadic hunter-gatherers to semi-sedentary or sedentary foragers and farmers. Based on research at sites on Mexico's gulf coast, central highlands, and coasts, it seems