If the global "average” TER is 2.5, what TFR is needed in order to keep a population stable over time?

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.

Answer they are produced by collision of tectonic plates;