11 unread reply.11 reply.This final discussion is your opportunity to bring together and reflect on everything that you've learned about life on Earth in this Life in the Universe course. Prompt :...

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Title: Origin and Evolution of Life on Earth
The first question that is yet to be answered properly, is ‘Did life on earth came from comets, along with water?’ It is already proven that majority of the water on Earth has come from comets of the universe, roaming aimlessly in the solar system and interstellar place. As mentioned by Westall and Brack, water is a vital ingredient for harvesting life on Earth and without water the existence of life is unlikely to sustain itself.
    Scientists have explored the elements found on comets to establish their theory that water on Earth came from comet impacts. Finding the answer to whether life came to Earth, through a comet would give...