Seismograph a records p waves at 6: 05 pm and s waves at 6: 10 pm. seismograph b records p waves at 6: 10 pm and s waves at 6: 25 pm. what is the difference in the arrival times at each device? which device is closer to the earthquake's epicenter?

The map above shows where people live in the united states. areas that are darker blue are areas where people live close together. areas that are lighter colors are places where people live farther apart. as a geographer, if you were to study where people live and why they choose to live in these places, which of the six essential elements of geography would you be using?