Which rocks are formed by the alteration of pre-existing rocks by great heat or pressure?
کون سی چٹانیں پہلے سے موجود چٹانوں کی تبدیلی سے شدید گرمی یا دباؤ سے بنتی ہیں؟
Answer: Metamorphic rocks
Explanation
Metamorphic rocks are rocks formed from existing rocks whose mineralogy, chemistry, and texture have changed due to heat and pressure in the depths of the Earth's crust.
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