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. decrease b. increase c. prevent d. promote e. reduce f. relate The fire-mediated hypothesis for encroachment predicts that increases in grazing pressure which reduce the amount and connectivity of fire fuel (i.e. vegetation) also (1)__________ the frequency of fires. (2)__________ed fire frequency then allows for (3)__________ed shrub abundance by decreasing fire-(4)__________ed mortality of shrubs and shrub seedlings. Alternatively, fire exclusion may also __________ encroachment by reducing fire frequency and subsequently increasing shrub recruitment and survival.