They studied fossils (paleontology) and applied the principle that old layers or rock are lying just below young layers
Answer:
This number will be used to tell you how far your seismograph is from the epicenter of the earthquake. Measure the distance between the first P wave and the first S wave. In this case, the first P and S waves are 24 seconds apart.
answer: seismograph
Political geography studies all the following except Economies ( answer A). Political geography is concern with study of both spatially uneven outcome of political processes and the ways in which political processes are themselves affected by spatial structure. It also involve study of boundaries and their associated region.
It is the most northern extreme.
Http://www.skwirk.com/p-c_s-57_u-183_t-490_c-1797/sa/7/shaping-mountains-weathering/erosion-and-r check out this source.
