stratosphere
When air pressure goes up, the temperature usually goes down. This is because as air pressure increases, the air molecules come closer together, which reduces their kinetic energy and therefore lowers the temperature.
The layer underground where there are no empty spaces for water or air is known as the impermeable layer. This layer prevents the movement of fluids such as water or air because it is tightly compacted and does not allow permeation.
The troposphere is the layer of the atmosphere closest to the Earth's surface and contains around 75% of the total mass of the atmosphere. This layer is where most weather phenomena occur and where we find the air we breathe.
The layer of the atmosphere with the least amount of air pressure is the exosphere, which is the outermost layer of Earth's atmosphere. It is composed of very thin air molecules spread far apart, resulting in extremely low air pressure.
A layer underground that is impermeable and contains no void spaces for water or air is known as an impermeable layer or aquitard. This layer restricts the flow of water or gases through it due to its low permeability.