All of the layers are important to some degree, however in my opinion the troposphere is because that is what we live in.
Troposphere
in the mesosphere
The lowest atmospheric layer is called the troposphere.
The Ozone Layer!
The topsoil, which is where most root growth occurs, is the most important layer for growing crops.
Troposphere
The troposphere is the closest to the Earth and most dense atmospheric layer
The atmospheric layer containing pollution is troposphere. It the nearest to earth.
Proposphere. This is the first layer about 12 km from the earth.This is 3/4 part of total atmospheric mass.Temparetutre are constant in this layer.
The ozone layer of the earth is a very protective and important layer. This layer is a boon at the atmospheric level.
The lower stratosphere.
The troposphere.
in the mesosphere
Troposphere
The layer of atmosphere that contains the maximum ozone is stratopshere. It contains most of the ozone in the form of ozone layer.
The Exosphere is the atmospheric layer the farthest distance from the lithosphere.
Earth's atmospheric layer contains ozone layer. It protects us from harmful UV radiations of the sun.