The relatively thin layer on the earth's surface where life is possible is known as the

The Earth has four layers, the one we live on is the Crust.

The inner core is in the center and is the hottest part of the Earth.
The outer core is the layer surrounding the inner core.
The mantle is the widest section of the Earth.
The crust is the outer layer of the earth.

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The answer is the magnetosphere.

Ibelieve it is the 2nd answer, create gardens on all rooftops. let me know if this .