the hydrosphere is in" class="read-more button" href="https://exam.pscnotes.com/mcq/the-main-percentage-of-the-volume-of-water-in-the-hydrosphere-is-in-2/#more-59912">Detailed SolutionThe main percentage of the volume of water in the hydrosphere is in
million years ago." class="read-more button" href="https://exam.pscnotes.com/mcq/the-palaeozoic-era-starts-at-____-million-years-ago-and-ends-at-____-million-years-ago/#more-59652">Detailed SolutionThe Palaeozoic era starts at ____ million years ago and ends at ____ million years ago.
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class="read-more button" href="https://exam.pscnotes.com/mcq/the-himalayan-mountain-system-belongs-to-which-of-the-following/#more-59382">Detailed SolutionThe Himalayan mountain system belongs to which of the following?