Which is the first step that geologists must do to compare rock layers at distant locations?

Answer: the philippines has suffered from an inexhaustible number of deadly typhoons, earthquakes, volcano eruptions and other natural disasters. this is due to its location along the ring of fire, or typhoon belt – a large pacific ocean region where many of earth's volcanic eruptions and earthquakes occur.

Ithink that the missing word is mixed

The process by weathered rock and mineral particles are removed from one area and transported elsewhere

Economy is the answer