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There were no cities millions of years ago.
millions and millions of years ago
it would be around 650 millions of years ago
Millions of years ago most of the land on the eart was covered by?
Nothing. While limestone existed millions of years ago there were no people to give it a name.
how were the salt mines formed millions of years ago.
Millions of years ago .
.02 million years ago 2.0x10-8
ma in this context means "millions of years ago".
144 to 65 Million Years Ago
about 360 million years ago
The moon was formed about 4.8 billion years ago.