Migration, birds fly south at different times of the year this depends on how far they live and when their food supply is dissapearing.
It's called migration.
This process is called convection. Convection is the transfer of heat through the movement of fluids, such as water, as warmer fluid rises and colder fluid sinks.
The opposite of colder is warmer.
This process is called convection. The warmer air rises because it is less dense than the colder air, creating a convection current.
i think its colder but i dont know am i right?
Yes, cold energy can be transferred to an object through a process called conduction. When a colder object comes into contact with a warmer object, heat energy is transferred from the warmer object to the colder one, resulting in a decrease in temperature of the colder object.
Thermal Layer
colder
Starfish prefer warmer waters rather than colder waters.
Hot in the summer and then it get colder and colder over the fall and in the winter it get's really cold some places, but rains in other places. And finally it gets warmer during spring, however a bit chilly in the begining.
Warmer
colder