By tradition, when does the presidential campaign begin? a. after a candidate has gained enough electoral votes in the primaries b. when a candidate is officially nominated at the national convention c. in september, following the national convention d. with the new hampshire primary

Is the weather changing? consider the data of severe weather that includes tornadoes occurring throughout the u. s. over the last four years. compare the severe weather for the last three years. then compare the first three months of 2017 with that data. based on previous years, what might the prediction be for weather during 2017?