Because they are curious. They want to know what happened in the past.
There quite a bit of evolutionary changes that happened 5 millions years ago. Mammals were constantly changing and humans as we know them today are said to be only 2.4 million years old.
It is certain... look-up "Pangaea" or (List of supercontinents).
There were no cities millions of years ago.
Millions of years ago but scientists do not know the exact year.
No they just have bad eye sight because of when something happened like millions of years ago.
millions and millions of years ago
it would be around 650 millions of years ago
fossils
i dont know the answers
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.