history of infectious disease

衛星写真で見てみましょう。日本は、7000弱の島々が線状に連なる島嶼国です。しかも、国土の約7割は山岳地帯で、森林に覆われています。

Let’s take a look at some satellite photos. Japan is an island country with a linear chain of a little less than 7,000 islands. Incredibly, about 70% of the country is mountainous and covered with forests. This topographical feature has