Right now, percent of the world's population lives in urban areas. A. 49
B. 68
C. 35
D. 53

Which number shows the location of the united kingdom of great britain? 7 5 2 4

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.

All of the following occurred due to the invention of the railroad except