What conclusion can you draw if the line of best fit on a linear graph does not slope either up or down but is horizontal

Who was marshall mcluhan and what did he have to do with communication theory?

What is the definition of evolution

Who were the “rough riders”? a. cuban revolutionaries who battled the spanish for independence b. a volunteer cavalry unit in the spanish-american war c. spanish generals in cuba who mistreated the civilian population d. newspaper owners who influenced public opinion by exaggerating the truth