Which sentence is correct about petroleum and natural gas?
A. They are found through strip mining.
B. They are found in rock folds underneath the ocean floor.
C. They are formed in low-pressure conditions.
D. They exist in the solid state.
A. They are found through strip mining.
B. They are found in rock folds underneath the ocean floor.
C. They are formed in low-pressure conditions.
D. They exist in the solid state.