Dora rolled a marble down a ramp and recorded the potential energy and kinetic energy of the marble at different positions on the ramp, as shown in the table below. marble experiment height of marble from ground (meters) potential energy of marble (joules) kinetic energy of marble (joules) total energy of marble (joules) trial 1 1 2 4 6 trial 2 2 4 2 6 which is the constant variable in this experiment?

Americans often speak of their country as one of several large regions.  these regions are cultural units rather than governmental units --  formed by history and geography and shaped by the economics, literature and folkways that all the parts of a region share. what makes one region different from another? a region's multicultural heritage as well as distinct demographic characteristics like age and occupation make regions different and special. within several regions, language is used differently and there are strong dialects. there are also differences in outlook and attitude based on geography.