How the world will end and how the living species will be effected. What do you think? All are FACTS!?

When 2012 comes I think this will happen. There's Planet X, and that it's a "crossing planet" which means that it crosses from one solar system to the other and that on 2012 it will cross into ours. Unfortunately Planet Earth is in it's path and once Planet X crashes into Earth the whole planet will experience a polar shift meaning that the North Pole and the South Pole will be on the East, and West sides putting all the ice into a position in which the Sun melts the ice flooding almost all if not, all living things. How the aquatic animals will mutate is that all the animals will swim across the planet, but since all the chemical laboratories will be flooded, all the chemical toxins will contaminate the water thus mutating all species in gargantuan size like the dinosaurs. From 2035 to 2050, sometime between those years an asteroid the size of Mercury will cross paths with Earth thus destroying all living species in which happened to the dinosaurs in the B.C era. Then the whole cycle will repeat.