That’s a possibility I had not considered. Maybe Antarctica moved south because of the flood.
I don’t know. Like the atheist, I can only ...
1) speculate based on the evidence (Noah’s flood moved stuff, rather than billions of years)
2) according to my world-view (Bible = Word of God, rather than Darwinism)
Its not only atheists who believe in the evidence of an old earth and the evolution of species. It is in fact the mainstream Christian position.
I am a Christian as well as a Biologist who knows understands and has confidence in the theory of evolution through natural selection of genetic variation; along with many many others.