The first law of thermodynamics states that a heat can by itself pass from a lower temperature to a higher temperature. b-heat can't by itself pass froma lower temperature to a higher temperature.

An atom's smaller negative particles are at a distance from the central positive particles, so the negative particles are easier to move. 

If one were to put the y value into the equation, they could find out what x is for a certain value of y.  putting in the value of y (1), we get the equation: 1=4x-12=4xx=0.5this means that the value of x when why is 1 is x=0.5

Shania is trying to determine the oldest geologic unit on this map and the reason to why is she unable to do so is that  the units are all the same age.. when there is the same age, there will be no oldest geologic unit and that i cannot be credible.