What is the primary way that metamorphic rocks forms?

where the rocks are exposed to really hot conditions and high pressurethese conditions are found deep where tectonic plates meet or deep inisde the earth past our core

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high heat, high pressure, hot mineral-rich fluids or commonly a combination of these found deep in the Earth or where tectonic plates meet.

Explanation:

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coil wire, increase current, put iron inside the coil

i don't understand. explain it clearly