Which statement about the appalachian mountains is true? 1.They run from Wisconsin
2.They are the longest mountain chain east of the mississippi.
3.They are younger than the rocky mountains.
4.They have not been affected by natural erosion.

Based on what you know about the location of the earth in relation to the sun, why is this called the goldilocks zone in other galaxies? a. it's a region that exhibits a weak gravitational pull, thus maintaining a safe distance from the sun. b. it's an area that doesn't experience any major weather events that could cause mass extinctions. c. it's an area that's an optimal distance from the sun for potentially supporting life. d. it's a region that's unaffected by asteroid or meteor impacts.