The answer is <span>Hot, less dense air rises
In the convection cycle, air will rise due to the heat that is displayed by the sun. This makes the cold, denser air started to fall and creating a differential pressure within the atmosphere. This pressure will influence the movement of the air and create a wind.</span>
Because they have selective mutation and each time an organism/animal reproduces they get half of their parents chromosomes. therefore each and every single organism/animal will be unique