About 15 billion years agone a tremendous flare-up started the expansion of the universe. This explosion is known as the Big Bang. At the point of this event all of the matter and energy of office was contained at one point. What exisisted prior to this event is completely obscure and is a matter of pure speculation. This occurrence was not a conventional explosion but kinda an event make full all of space with all of the particles of the embryonic universe hasten away from each other. The Big Bang actually consisted of an explosion of space within itself.
The galaxies were not all clumped to compassher, but rather the Big Bang lay the foundations for the universe.
Evolution is change in the genetic material of a community of organisms from one extension to the next. Though changes produced in any one generation are normally small, differences accumulate with each generation and can, over time, because square changes in the population. The few variations of evolution are mutation, sex and recombination, population genetics and gene flow.
About 3,5 billion years ago the first one-celled life forms were formed. These could do photosynthesis: that is they used carbonic oxide and water to make proteins, fats and other organic connections. This...If you want to get a full essay, order it on our website: Orderessay
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