1.Which of the U.S. Regions has the lowest number of tornadoes during the entire year? 2. Which U.S. region has 81 tornadoes in May? 3. Notice on the chart that April, May, and June have a higher number of tornadoes on average than other parts of the year. Explain why there are more tornadoes during those three months than the other months. You may want to include something about air masses.