Origin of freshwater on Earth. — Pixabay/FileA new research has found that fresh water appeared on Earth about four billion years ago, Phys.org reported.Scientists, by studying ancient crystals, were able to timeline the "origins of the hydrological cycle, which is the continuous process...source https://www.thenews.com.pk/latest/1198535-new-study-finds-earth-wasnt-covered-by-water
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