Recently, research has been published in the Nature Geoscience journal and this research, scientists have given stunning views about the earth. They have done their study on the ancient sample of seafloor. They have found this ancient sample of the seafloor in Australia. The chemical clues on this seafloor suggest that Earth was a completely blue planet. Based on this evidence, they have suggested that 1.5 billion years ago, there were no continents and this planet (Earth) was covered by a vast ocean.
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