The Universe: The Evolution of Homosapiens (The Universe Part 4)

The Top Ten Daily Consequences of Having Evolved | Science | Smithsonian Magazine

               

              We believe humans evolved from monkeys. And in fact it has been proven to be true. The fossils of our ancestors and their ancestors were found at various places that led to believing that humans evolved from monkeys. 

              The first organisms on the planet earth, Cyanobacterias, produced oxygen by photosynthesis. There evolved many organisms from this bacteria. This bacteria lives only in water (marine, fresh, brackish) and that explains why the first animals evolved were aquatic. The Comb Jelly is believed to be the first animal to be formed after these bacterias. 

              Many billions of years passed by and there were many types of plants and animals on earth. The temperature became very low but suitable for life on land. The trees provided food and oxygen. Fishes, who were vertebrates (animals with back bone) tried to come out of the water but failed. But slowly, as the time passed these fishes evolved legs instead of fins and lungs instead of gills. 

              These fishes became larger and larger, they evolved primitive limbs and then 2 pair of limbs. Species like Dryopithecus were the first ancestors of the humans as well as the apes. Then there came Australopithecus, then evolved from Ramapithecus. Homo erectus evolved from Ramapithecus had rounded skull, steeper face, smaller teeth, large cranial space. Then there came Homo Neanderthals which evolved to Homo Sapiens. The Homo Sapiens are us, humans. 

              The Homo Sapiens have well developed respiratory, circulatory, excretory and other organ systems. They have a large brain evolved to interpret, recognize various texts, speeches, touches. The Homo Sapiens have now even known how they evolved or how we were a part of a dead star. 

              Why does not electron fall into nucleus? What does matter? What is present in the spaces of an atom? We say atom is indivisible, is it really indivisible? What holds the nucleus together? Why does not atom collapse when we touch another atom?

                                                            -Blog by Daksh Bawgiker 

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