Discussion
Petroleum is formed from oceanic organisms that have large component of.................and therefore less oxygen per carbon than the C6H10O5 of carbohydrates found as three major component of land plants :
Answer: B
The missing component is lipid.
Marine plankton and algae are rich in lipids (fats, oils and waxes), which are long hydrocarbon chains with very little oxygen. That hydrogen-rich, oxygen-poor organic matter is what generates oil, whereas land plants are dominated by carbohydrates such as cellulose, built of C6H10O5 units with one oxygen for every carbon or so, which tend to form coal and gas.
Fulvic acids are soil humic substances and amino acids are the building blocks of proteins; neither explains the low oxygen content of petroleum. 'Pepofine' is not a recognised constituent.
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