VIP infers historical biogeography by examining disjunct geographic distributions. A geographically disjunct population also occurs in the deserts and savanna of northeastern Africa. Larger scales are constructed from conjunct or disjunct tetrachords. A disjunct population inhabits the Meghalaya Plateau of north-eastern India. Scales are constructed from conjunct or disjunct tetrachords. The species occurs in eastern North America with disjunct populations occurring in the west. Two disjunct populations exist in the United States. An operand of a disjunction is called a disjunct. Despite the two disjunct ranges, populations across these are genetically similar. Previously, more species with disjunct distributions were named as members of this genus "Macadamia". The conjunct prefixes occur after the disjunct prefixes, closer to the verb stem. The prefixes can be divided into a conjunct prefix set and disjunct prefix set. Bass motions move in a conjunct (stepwise, including chromatic) motion or disjunct motion (sequences). Melody may be characterized by its degree and type of conjunct and disjunct motion. The major classes of adverbials are adjunct, disjunct and conjunct.