It is this heat that causes the temperature to increase with depth in the Earth and is responsible for melting of mantle rocks to form magmas.
(It; is; this heat that causes the temperature to increase with depth in the Earth and is responsible for melting of mantle rocks) (this heat; causes; the temperature to increase with depth in the Earth) Context(this heat causes,List([6, 27))):(the temperature; to increase; L:in the Earth) (this heat; is; responsible for melting of mantle rocks)
this heat causes,List([6, 27))
It this heat the temperature this heat
is causes to increase is
this heat that causes the temperature to increase with depth in the Earth and is responsible for melting of mantle rocks
the temperature to increase with depth in the Earth
L:in the Earth
responsible for melting of mantle rocks