Approximately how much of the world's estimated oil and gas reserves can be found within the

sediments of the continental margins?
a. One-third
b. One-half
c. Two-thirds
d. Three-quarters


ANS: C
It is estimated that two-thirds of the world's fossil fuel reserves are found in sediments on the
continental shelf. This includes 38% crude oil and 33% natural gas. Information can be found in the
section Marine Sediments Are Economically Important.

Environmental & Atmospheric Sciences

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