Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.
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Question: Question: What are oil in folded layers of rock called? Answer: anticlines

Answer: Geologists look for oil in folded layers of rock called anticlines ( Figure below ). Oil moves through permeable rock and is trapped by the impermeable cap rock.

Question: Question: When volume does not change, temperature is proportional to what other property? Answer: pressure

Answer: Pressure and temperature at constant volume are directly proportional.

Question: Question: What kind of rocks form as an existing rock is altered by high temperature or pressure? Answer: metamorphic

Answer:
Metamorphic rocks form as an existing rock is altered by high temperature or pressure.