Use a periodic table to find the elements that are most abundant in our Oceans:

A) H, Cl, O

B) Al, Fe, Ca, Na, K, Mg, O, Si

C) N, O, Ar

d) H, N, Ca, P, O, C

The correct answer is A

Explanation:

Hydrogen, oxygen, chlorine are the most abundant elements in oceans.

Oxygen is 85.84% by mass

Hydrogen is 10.82% by mass

Chlorine is 1.94% by mass

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