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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here are my awnsers hope it helps you...
Answer:
red blood cells and white blood cells
Explanation:
Im thinking its D. bcuz all three A. B. C. are true