What two substances are found in the greatest abundance among the major salts dissolved in sea water?

Average density at the surface is 1.025 kg/L. The two substance that can be seen in salt in sea water is sodium and chloride, seawater has approximately 35 grams (1.2 oz) of dissolved salts (predominantly sodium (Na+) and chloride (Cl−) ions). Seawater is denser than both fresh water and pure water (density 1.0 kg/L at 4 °C (39 °F)) because the dissolved salts increase the mass by a larger proportion than the volume.

answer: the answer is b

answer///multiple alleles;