What is classic metamorphism?

Why chemically-speaking is a stick of butter solid at room temperature while olive oil exists as a liquid at room temperature? How are epigenetic changes different than DNA mutations? Why hard wire a light? How does nuclear fusion different to nuclear fission? What was the During the twentieth century Earth average surface temperature? What is the amp capability of 600 volt wire? What can you guess about the environment at the time an uncomformity was forming? What parts of the body are attached to the lumbar? When you open a can of room-temperature soda why is it more likely to fizz an spill over than a can that has been refrigrated? Which microscope magnification should be used to observe the largest field of view of an insect wing? What map would you use to find the deserts of Africa? How many feet are there in 950 meters? What are some Rainforest medicine? What do you use alkenes for? Most accidents in urban areas occur where? Is calcium potasium? What kind of on-the-job training does a zoologist need? What is a characteristic of divergent boundary? What is the name of the theory which deals with particle behavior in the gas phase? How does the idea of a Rotating disk in the nebular model explain certain observed celestial phenomena?

What is classic metamorphism?