Footnote
b It has been calculated that “the mass of the oceans is approximately 1.35 quintillion (1.35 x 1018) metric tons, or about 1/4400 of the total mass of the Earth.”—Encarta 97 Encyclopedia.
b It has been calculated that “the mass of the oceans is approximately 1.35 quintillion (1.35 x 1018) metric tons, or about 1/4400 of the total mass of the Earth.”—Encarta 97 Encyclopedia.