How do fronts affect the formation of tornadoes? A. Tornadoes can form when one front moves in a circular direction. B. Tornadoes can form when two fronts pass one another. C. Tornadoes can form when one front reverses direction. D. Tornadoes can form when two fronts move into each other.

Scientists are conducting a study on the effectiveness of a new drug on memory loss. they are giving some of the test subjects the new drug to find out if it improves their long-term memory. which are possible limitations of this study? check all that apply. a) test subjects may want to participate in additional experiments. b) test subjects may think they should be paid more. c) test subjects may get bored and want to quit early. d) test subjects may have to travel during the experiment. e) test subjects may have full-time jobs. this is multiple choice. you for the !