Respuesta :

1.C, Coal

The Persian Gulf, the Gulf of Mexico, and the North Sea are all known for their reserves of what ocean resource?

2.A, Oil

Which ocean resources are second in economic value to oil?

3.A, Sand and gravel 100%

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Answer: Sand and gravel

Explanation:

Sand and gravel have second economic value when it comes to ocean. Sand is used in various types pf activities as it is used for decorative purposes, construction processes and at many other places.

Gravels are small stones that is used as decorative material inside aquariums and it is also used in homes and hotels as a source of decoration and construction.

It has a bit low value as compare to oil that is extracted from ocean.

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