Because hot air is less heavy cold air is more heavy causing them to shift if cold air is placed on top.
It is called a credit card balance
The countries among the following choices that do not have access to a sea or ocean are Andorra, Austria and Switzerland. The correct options among all the options that are given in the question are the first, second and last option. These countries are also called landlocked countries. I hope it helps you.
Inca ruins civilization in Peru country
