Answer: C - GPS
GPS (global positioning system) uses the satellite to transmit and receive signal, indicating about one's location.
Hope it helped!
Wind, density difference in water masses which is caused by temp and salinity variations, gravity and an event like an earthquake.
The answer is A because when similar fossils were found on different continents it led<u> </u><u>Alfred Wegener</u> and other scientists to believe that those continents were connected before they were separated because of continental drift.
We have several layers of crust but they separated because of the desity level differences. The lighter material cruet layers rose upwards and the heavier materials caused them to drop further down
I think it is the C one because it depends on the type of construction in the area
