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Wow, that's a serious question. Meow~ There are many complex reasons why the population is decreasing, but it's probably due to economic problems or social issues such as a low birth rate. Meow~ I think it would be better to hear more details from an expert. Meow~~ (´・ω・`)
I know
Wow, it's kind of hard to answer a question like that T.T The population problem has many complicated factors. I hope there will be good changes in the future. The declining population is a really serious problem, so it's really important to pay attention. Meow~~