Question

"How do we know that organisms existed millions of years ago"?​

Answer 1

We know that organisms existed millions of years ago by the artifacts and remains that they have left around us.

Step-by-step explanation:

We find those remains by archaeologist, and they dig up the remains that the people left back then.

Answer 2

There is evidence in fossils, the scientists can scan the fossil to see the date.

Step-by-step explanation:

hope this helps