Webసముద్రంలో ఈ జీవి గురించి ఎందుకు దాస్తున్నారు Why Do Deep Sea Creatures Evolve Into ... WebJul 29, 2014 · For billions of years, single-celled creatures had the planet to themselves, floating through the oceans in solitary bliss. Some microorganisms attempted multicellular arrangements, forming small sheets or filaments of cells. But these ventures hit dead ends. The single cell ruled the earth. Then, more than 3 billion years after the appearance ...
From water to land - Understanding Evolution
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