Alfred Wegener produced evidence in 1912 that the continents are in motion, but because he could not explain what forces could move them, geologists rejected his ideas. Almost 50 years later Harry Hess confirmed Wegener's ideas by using the evidence of seafloor spreading to explain what moved continents.
Interactions<span> between the </span>human<span> social system and (the “rest” of) the ecosystem</span>
A grid made up of longitude and latitude lines to precisely locate specific locations. The compass rose indicating the cardinal directions of North, South, East, and West as it relates to the map. The scale compares the distances on the map to actual distances (i.e. 1 inch = 10 miles).
