The minimum spanning tree of an undirected graph g exists if and only if g is connected. true or false?

Describe three characteristics of at-risk drivers. a. b. c. describe three characteristics of safe drivers. a. b. c. describe three driver errors that could cause a collision. a. b. c. how will this information affect you as a driver now and in the future? (2-3 sentences)

Brian wants to conduct an online search with a certain phrase. he intends to use the words books that belong to the 1800s in his search. how should he use the word that in his search?

Fast answer i need for apex ! smartphones should be banned from the classroom in public schools so that students cannot cheat on test so easily? which is an example of a counter argument to the thesis above? a.the classroom is a place for learning not for making phone calls b. smartphones are useful learning tools in the modern classroom c.banning smartphones will not students pay attention to teachers any better d. banning smartphones would decreased incidents of theft