The earth's first oceans would have obtained freshwater as a result of the condensation of water vapor in the atmosphere back then.
The freshwater of oceans was hypothesized to have been formed by the condensation of water vapor present in the early atmosphere of the earth.
The water vapor was thought to have emanated from volcanic activities. The condensation was in the form of rain and the resulting puddles merged together to form the oceans.
More on how the oceans were formed can be found here: https://brainly.com/question/14073797
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