In 1942 the geophysicist Keith Bullen published a paper describing the earth's internal layering in which he used letters to designate various layers from the surface to the core. In this scheme, the earth's lower mantle was known as the D layer.
The layer below the earth's outer layer is mesosphere. It is the 3rd layer.
Crust
The crust.
No. the layer that actually reaches the surface is the troposphere.
Mantle
STRATOSPHERE
the layer of rock that comprises 67% of earths mass
half of earths layer
The crust is the thinnest layer of the Earth.
The earth thinnest layer is the crust.
Actually, the Troposphere Layer can be considered as Earth's first protective layer, because its well-the atmosphere's first layer. You can think of it that way to remember which is Earths first layer.
The layer below the earth's outer layer is mesosphere. It is the 3rd layer.
The D" layer (pronounced D double prime layer) forms the base of the Earth's lower mantle. Below this lies the outer core. This boundary zone is marked by a seismic discontinuity known as the Gutenberg discontinuity.
Mantle.
Crust
the earths outer layer
the ozone (O3) layer