The Ozone layer.
Or the whole atmosphere in terms of air pollution / climate.
Then again land surface is most important part of the surface layer because that is where we live.
The sea is a larger part of the Earth's surface layer and plays a huge part in climate so I guess that makes it important.
The plates on the surface layer are pretty important because they shift and cause volcanoes which affects the air and climate.
The outer magnetic layer called the Van Allen belt is absolutely important otherwise we would have been toasted by radiation.
I would be hard pressed to choose a single layer - they all form part of a complex system.
UV-B from the Sun.
Ozone layer protects us from harmful radiations. UV radiations are these rays.
The stratosphere layer of the atmosphere contains the ozone layer. This ozone layer protects us from the harmful UV radiations of the sun.
The ozone layer protects us. It is present in stratosphere.
Ozone layer protects us. It is present in the stratospheric region of atmosphere.
Ozone layer acts as a blanket of air for us. It protects us from the UV rays of the sun.
The ozone layer is being depleted by the CFC's. It causes UV to enter which are harmful for us.
There are no harms of ozone layer. It protects us from UV rays of the sun.
The ozone layer consisting of ozone molecules protect us. It is a shield for blanket of earth.
Ozone layer protects us from harmful UV rays. They are fatal for life on earth.
Ozone layer protects us. It is present as pool of ozone molecules.
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