The crude oil extracted today was formed millions of years ago from the fossilized remains of algae and other tiny marine organisms. Most parts of the organisms decomposed soon after they died. Which biomolecules
decomposed more slowly and became the basis of crude oil?
O proteins
O carbohydrates
O fatty acids
O nucleic acids



Answer :

Final answer:

Carbohydrates decomposed slowly to form crude oil from ancient marine microorganisms.


Explanation:

Carbohydrates decomposed more slowly and became the basis of crude oil. When marine organisms like algae and plankton died, they were buried in sediments under oxygen-poor conditions, preventing rapid decomposition. Over millions of years of heat and pressure, these organic compounds transformed into oil and natural gas.


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