Which rock layer is the youngest?

Using complete sentences, describe the central economic problem facing all humans. why does this require people to make choices? how can this result in opportunity costs?

Lines of longitude are like stripes from the top of the globe down to the bottom virtually slicing the earth like an orange

Rah is completing a school project on the expansion of fast food restaurants across the united states. she finds a map that shows a clear pattern of restaurants beginning in the east and expanding west. this map was most likely created using the technology of