Choose a proper verb of base form from the list to fill in each of the blanks in the following sentences. Please answer the questions by typing the corresponding letter a - f in the cell. one of the words/prases is not to be used. a. associated with b. cite c. drive d. follow e. posit f. predict In semi-arid and arid rangelands, shrub encroachment has almost ubiquitously __________ed pastoral settlement and subsequent cessation of indigenous land management practices. Of the many environmental changes __________ed pastoralism, livestock grazing and fire regime shifts are commonly __________d mechanisms thought to __________ encroachment. The livestock grazing hypothesis __________s that overgrazing of palatable herbaceous species by introduced livestock release s unpalatable woody shrubs from competition with herbaceous species. The result of continual overgrazing is an increase in the density of woody species.