It was just a regular old sunny day, nobody knew what was going to happen
As the day went by, it started to rain. which turned into something worse
for a long time there was a blizzard
this weather stayed the same for 50 years. always under freezing, and as time went animals with small mouths died out mostly and large mouth animals survived
then VS now from between those 50 years, yes other animals have changed but there is too much to show.
after the blizzard ended, the winter still stayed in that area. the nature has evolved and bears have adapted to there new environment