Question

What is metamorphic rock? Discuss the various agents of metamorphism.

Answer 1

ℍℰℒℒᝪ ⅅℰᗅℛ 
♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️
The agents of metamorphism include heat, pressure (stress), and chemically active fluids. During metamorphism, rocks are often subjected to all three metamorphic agents simultaneously.
♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️
Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism, which means "change in form". The original rock is subjected to heat and pressure, causing profound physical or chemical change. The protolith may be a sedimentary, igneous, or existing metamorphic rock. 
♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️
Thanks

Answer 2

Metamorphic rocks form from preexisting rocks that have been altered by the agents of metamorphism, which include heat, pressure, and chemically active fluids.