IntroductionAccording to scientists, one of the most extraordinary explosions of evolution ever known was the Cambrian Explosion. For much of the nearly 4 billion years that life has existed on Earth, evolution has produced little beyond bacteria, plankton, and multicellular algae. Then, between 570 and 530 million years ago, another explosion of diversification occurred. This extraordinary period is called the "Cambrian explosion", taking the name of the geological era in which the previous part occurred. A recent study revealed that life evolved during the Cambrian period at a rate about five times faster than today. But it certainly wasn't as quick as an explosion; The changes appear to have taken about 30 million years, and some phases took 5 to 10 million years. The Cambrian Explosion was a period of time in which life evolved into numerous multifaceted organisms that developed into vertebrates and human life as we know it today. The Cambrian explosion took place in the Paleozoic era where a diversity of life emerged, leading to the lineages of nearly all animals living today. This group includes chordates, a group of vertebrates of which humans are a part. Numerous species have evolved from this phenomenon with great changes, including Homo sapiens. What happened during the Cambrian explosion and what impact did it have on human evolution? Common Theories There are several theories about how the Cambrian explosion began. There were major changes in marine environments and chemistry from the late Precambrian to the Cambrian, and these also may have influenced the rise of mineralized skeletons among formerly soft-bodied organisms. One theory about what happened is that oxygen in the atmosphere, with the contribution of photosis… middle of the paper… or happened. But with the help of fossil evidence we are able to identify common ancestors and evolutionary paths between species. We also identify oxygen as an important key contributor to the evolution of life. Furthermore, through scientific research it has been established that arthropods and chordates have shared genes, which guide the path of vertebrate and human life. Works Cited http://www.pbs.org/wgbh/evolution/library/03/4/l_034_02. htmlhttp://biologos.org/questions/cambrian-explosionhttp://www.darwinsdilemma.org/pdf/faq.pdfhttp://science.nationalgeographic.com/science/prehistoric-world/cambrian/http://books. google.com/books?id=nAh7AgAAQBAJ&pg=PA9&lpg=PA9&dq=cambrian+explosion+human+evolution&source=bl&ots=j--hqsl0WE&sig=q2yEIfk6KKJ-bO2tLKXl2k93z_8&hl=en&sa=X&ei=6px2U82iLY2YqAaf3oG ved=0CJMBEOgBMA8#v=one page&q=cambrian%20explosion %20human %20evolution&f=false