posted by Nikki .
according to scientific hypothesis, how were earth's oceans formed? when do scientists hypothesiz they formed?
Are you talking about the first appearance of water or the development of the specific oceans that we now know?
Since this is not my area of expertise, I searched Google under the key words "ocean formation" to get these possible sources:
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In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
I hope this helps. Thanks for asking.