rift valley
rift valley
a portion is a small amount of it
crust
The crust.
crust
The crust is the layer at the surface that forms the upper part of the plates. The plates also include a portion of the upper mantle just beneath the crust. Together, the crust and this upper portion of the mantle form the lithosphere.
The mantle.
The crust.
magma
Yes, allergies can lead to the formation of eye crust due to increased tear production and inflammation in the eyes.
The portion of Earth's crust which is composed of the element silicon is roughly 28%.
continental slope