I think D is the the answer as well
la tierra está formada por 3 capas la tierra el manto y el núcleo
They mostly had resources , and locations in common.
Sand can be trucked in from other sources and filtered for sediments to eventually make way into the air and water. They can also build seawalls, revetments, and jetties along the shoreline. :)
Answer:
Because time varies with change in longitudes