Why did the “Cambrian Explosion” happen when before this event no other faunal explosions happened in billions of years of Earth’s history? It is too
mysterious that all happened right at the Cambrian, and, further, if not for this event no animal we are familiar with today would exist. As it always happens,
humans, when they don’t have an explanation for a phenomenon, they attribute aliens as a cause of the Cambrian Explosion. Can evolution be as geologically
fast as the Cambrian Explosion seems to indicate?
Watch the video link: (http://www.youtube.com/watch?v=R5_XLVqrTlM) and investigate and write an essay about the Cambrian Explosion. The questions
provided above are to motivate you to investigate about this topic; you do not need to answer them one by one. The essay must be at least four paragraphs
long, and each paragraph must contain at least five sentences (you can write more than four paragraphs and more than five sentences per paragraph if you
wish to do so). The content of your essay must be written entirely in your OWN words. Use in-text citations in parenthesis, APA style, if you paraphrase
information from other authors. Paraphrasing is not copy-pasting or copying and changing a few words from other authors’ writings – it is writing it in your
OWN words to explain the authors’ writings. Only when necessary, you can quote, but these quotes do not count towards the last tally of the number of
paragraphs and sentences required from your OWN writing. You must at least consult three references to investigate about this topic and must list these
three references (can include the video as one of them) at the end of your essay (use APA style).