Ice grows where it's cold U& moisture is supplied It tends to melt in Summer.
North & South Poles have opposite weather.
If Earth is only 6,000 years old, then the ice ages must have been rather limited in order to fit in this time frame.
And vast changes in life forms occurred in such a short time.
In effect, those who argue for 6,000 years are the biggest evolutionists as they expect vast changes to happen very fast.
Evolution on steroids?