refining is:
1) extracting petroleum gas
2) separation of various
fractions of petroleum
3) heating of coal
4) sedimentation of fossil fuels
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refining is:
1) extracting petroleum gas
2) separation of various
fractions of petroleum
3) heating of coal
4) sedimentation of fossil fuels
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Answer:
Refining is separation of various fractions if petroleum.
Answer:
4. Sedimentation of fossil fuels is known as refining.