Allah says in Quran:
"Glorify the name of your Lord, the Most High: He Who created and molded; He Who determined and guided; He Who forth green pasture; then makes it blackened stubble. " - (Quran, 87:1-5)
As we know, petrol forms from the remains of plants and animals in the sea.
Once these have decayed on the sea bed after millions of years, all that is left are oily substances.
The three elements identified in the first four verses parallel the formation of petroleum.
It is quite likely that the term almaraa, meaning pasture or meadow, refers to the organically-based substances in the formation of petroleum.The second key word in the verse is ahwa, which is used to describe blackish-green, greenish-black, dark or sooty colors.
This word is describing the waste plant matter accumulated underground gradually turning black.The above two words are supported by a third word, ghuthaan which is translated as stubble, which refers to plants brought together by waste being collected and dispersed around valleys, rubbish, leaves or foam.
In addition to the connotation of "vomiting out" implied in the word, it may also be translated as "to flood forth vomited matter," and describes the way that the earth "vomits" forth petroleum.
In fact, in the light of the formation of petroleum, the way it emerges, its foam-like appearance and its color, one can better see with what wisdom were employed the words in the verses.