How did the moon form?
an asteroid hit the earth and gauged out a chunk of rock that became our moon.
the moon was always there in the beginning
the earth broke in two
a nearby planet began orbiting the earth and became the moon.

because the center-south is called the heart of the country

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