Question

what causes the rocks to change during regional metamorphism? cementation cooling melting pressure and some heat rewatch skip

Explanation:

Regional metamorphism occurs over large - scale areas. High pressure and some heat act on pre - existing rocks, causing physical and chemical changes in them. Cementation is related to sedimentary rock formation, cooling is associated with igneous rock formation from magma or lava, and melting is a step towards forming magma.

Answer:

Pressure and some heat