Everything has a backup!
If there is only one earth, this reasonable? I mean, if the universe is only Earth has humanity, God would not give, because there is no backup of the universe, do not call the universe! ! !
Open your eyes, look at your hands, feet, think about your right brain and left brain, take a look at the animals, the plants are to think who. . . There is no spare parts?
So, please be assured that the universe, this planet earth if there is no backup, God can not do that.
But, not completely replicate, but do not put your eggs in one basket, understand this mean?