Compound X can be synthesized via a ring-closing metathesis reaction when treated with a Grubbs' catalyst. What is a possible structure of the starting material for this reaction

Label a-f based on the table using c for concentrated and d for dilute

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world