Answer:
Explanation:
A region is an area of land that has common features. A region can be defined by natural or artificial features. Language, government, or religion can define a region, as can forests, wildlife, or climate. Regions, large or small, are the basic units of geography.S
All river water comes from melted ice from mountains near them, so the time of year to temp. change depicts how much ice is melted into the river banks.
The process happens as the warm air is said to be less dense than that of the colder air. Another good example of convection current is wind.
