Winter is the coldest season of the year in polar and temperate zones (winter does not occur in most of the tropical zone). It occurs after autumn and before spring in each year.
Santa Claus's flying reindeer also provide assistance with pulling his sleigh. He is commonly portrayed as living at the North Pole, and laughing in a way that sounds like "ho ho ho".
Standard recommendations to prevent infection spread include regular hand washing, covering mouth and nose when coughing and sneezing, thoroughly cooking meat and eggs.
Snow comprises individual ice crystals that grow while suspended in the atmosphere-usually within clouds-and then fall, accumulating on the ground where they undergo further changes.