a lot of coastal shipping, especially around the Seto Inland Sea, pays for the lack of sailing rivers. The Pacific coastline south of Tokyo is described by long, narrow, gradually low inlets produced by sedimentation, which has created a lot natural harbors.
The Japanese islands are the best of mountain ridges uplifted near the end of the continental shelf. About 73 percent of Japan's area is made of mountains, and scattered plains and intermontane basins cover only about 25 percent
Only 12% of Japan's land is usuable for cultivation. Due to the lack of arable land, a lot of terraces is used to farm in small places. This adds up in one of the world's highest levels of crop yields per unit place, with an overall agricultural frugal rate of about 50% on fewer than 56,000 km² cultivated.
About 73% of Japan is occupied by mountains, with a mountain range running through each of the main islands
10% of the world's active volcanoes are found in Japan
Japan has become a world leader in research on causes and prediction of earthquakes. The making of advanced technology has permitted the construction of skyscrapers even in earthquake vulnruble areas. Extensive civil defense efforts pay attention on training in protection against earthquakes, in particular against accompanying fire, which represents the greatest danger.
Japan belongs to the temperate zone with four distinct seasons, but its weather varies from cool temperate in the north to subtropical in the south.
Central Japan in its high position, has hot summers and average to short winters with some areas having a lot of snow, and southwestern Japan has long, hot summers and mild winters. The generally humid, temperate climate exhibits marked seasonal variation such as the blooming of the spring cherry blossoms, the calls of the summer cicada As many as 1,500 earthquakes are recorded yearly, and magnitudes of 4 to 7 these are common.
Rivers are generally steep and swift, and few are able for