Answer:
I will research on troposphere Because:-
1. Most of phenomena occurs in troposphere
2. Most of terrain is found in troposphere
3. It is first layer of atmosphere
4. It is the nearest layer of atmosphere from the surface of earth
5. As it contain most of things so there most chance of discovering a new undiscovered thing
Explanation:
Hope this help!!
It can be one of two things.
First, it can be due to global warming.
Second, it can be due to the rotation of the sun. When the sun rotates, it can change it latitude causing it to hit at different points onto different areas of the world.
The air around you has weight, and it presses against everything it touches. That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth. Atmospheric pressure is commonly measured with a barometer.
Chile, Argentina, Brazil, Paraguay