How has the elderly dependency ratio changed in Japan in the last 20 years?

While both countries have high life expectancies, Japan's eighty-five-year life expectancy is among the world's longest, leading to a higher elderly dependency ratio in 2017. Additionally, the countries vary in their views of international migration as a population stimulus.

the precambrian aged rocks could be found in australia. australia is a region that has a lot of ancient civilization history from million years ago. in this region, there are a lot of recognizable fossils buried in its land which is considered a precambrian-aged rocks

answer(c) carved on a babylonian clay tablet that showed earth as a flat circular disk;