So you can understaned it much more better and think about it!
geologic time scale
So you can understaned it much more better and think about it!
We were left along time A ago , but today we can tell you A allot about earths history . What am I ?
So you can understaned it much more better and think about it!
The Precambrian Time
Because it was a long time ago and later planterary events have hidden or erased most trace of it.
geologic time scale
fossil record geologic time scale
fossil record geologic time scale
fossil record geologic time scale
fossil record geologic time scale
The Precambrian time