Similar fossils found on different continents helped geologists determine how the continents used to be connected. Mountain belts marked the boundaries of moving plates, which showed in which direction the different continents drifted. Extrapolating from this information, scientists had a rough idea of how the continents were arranged eons ago.
Mecca receives 4.3 inches of rainfall a year, mostly in the winter months.
Algae is warmful for the organisims of the area
