Scientists believe that 300 million years ago, the area around the Persian Gulf was a large swamp. Over the eons, pressure turned the plant matter into petroleum.
Petroleum is the biggest natural resource of Saudi Arabia which has made it so much wealthy and any other resource other than Petroleum is not mentionable.
petroleum and natural gas
Petroleum
No but Petroleum is.
The biggest natural resource in the country was timber. The natural resource to use in that situation was coal.
Petroleum.
Petroleum
Oil (petroleum)
petroleum
petroleum
The natural resource in cambodia have: - metal - petroleum - forestry
Yes it is. Asphalt as well