Dr. Alexander Winemann is a Biologist who specializes in organic chemistry.
Answer:
Ancient landmasses
Explanation:
The same fossils being found in widely separate areas can help scientists infer the geography of the continents of that time.
For example: Africa and South America used to be connected during the Permian Period.
Scientists can confirm this because both continents are home to similar fossils.
In eukaryotic cells DNA is in a nucleus where are in prokaryotic cells DNA is free