A. seismosphere
b. mesosphere
c. asthenosphere
or
d. lithosphere
The earths crust is a part of the outermost layer.
mesosphere
troposphere
The core.
The asthenosphere.
The mantle is the softest layer of the Earth.
lithosphere
The asthenoshpere
STRATOSPHERE
the layer of rock that comprises 67% of earths mass
half of earths layer
The earth thinnest layer is the crust.
The crust is the thinnest layer of the Earth.
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 earths crust is a part of the outermost layer.
mesosphere
troposphere