colorectal. pertaining to or of the nature of the colon and the rectum. colorectal polyp. benign or malignant; most commonly occurs at the anorectal junction in middle-aged dogs, causing diarrhea, dyschezia and rectal bleeding.
Although favorable conditions for tornadoes in the United States can occur at any time, they are most common in spring and least common in winter. Because spring is a transitional period for the climate, there are more chances of cooler air meeting with warmer air, resulting in more thunderstorms.
Tornadoes are most often generated along the cold front of a middle-latitude cyclone. False- Tornadoes- Winter, Spring and Summer Hurricanes- Late Summer and Fall Hurricanes that affect the United States occur most frequently during the same months that tornadoes are more prevalent.