How much of the world's crude oil is found on the seafloor?
a. 25%
b. 35%
c. 45%
d. 55%
ANS: B
The ocean makes a large contribution to the world's need for petroleum and natural gas.
Approximately 35% of the world's crude oil came from the seafloor. Natural gas from the seabed
contributes about 28% of the world's usage. Information can be found in the section Physical
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