Answer:
Shintoism
Explanation:
Shintoism is considered to be the traditional religion of Japan.
Let me know if this helps :)
It is increasing because the ice is melting and glaciers.
I really do not understand this but i hope you find it
I know jobs for one, over population maybe, and because they are worried that dangerous people could be entering into the country with intention to harm. (unless this is a "only 3 right answer" kind of thing)