It could be because India Is one of the most populated places so 12 in India doesn't seem that much there but if those numbers of people came to a country with a lower population it would be a higher percentage. if that makes sense..
I believe it is the third choice, there was nothing then a sudden explosion, creating the universe
These are called Subduction zones.
Helsinki is located on the Baltic Sea
The Inca used those metals to decorate their palaces and had silverware, cups and dishes made of them.
Of course, only royalty had that.