France, Spain and Greece are not examples of countries where the North and the South differ greatly: they have all experienced economic problems recently, but this was not specific to the Southern areas of their countries. .
The correct answer is Italy: there is a big difference between the North and the South of Italy, including a cultural difference.
The answer for "What is petrified wood made of?" would be minerals.
Is this geometry? if so is there a picture i can look at to help you?
