Here's why:

* 75% mountainous: Japan is known for its rugged terrain, with approximately 75% of its land covered by mountains.

* Natural hazards: Japan sits on the Pacific Ring of Fire, a zone of intense seismic and volcanic activity. This makes it susceptible to:

* Tsunamis: These are giant waves triggered by underwater earthquakes or volcanic eruptions.

* Earthquakes: Japan experiences numerous earthquakes each year, some of which are very powerful.

* Volcanic eruptions: Japan has over 100 active volcanoes, some of which pose a significant threat to surrounding areas.

Let me know if you have any other questions!