Global evolution

"The Cambrian Explosion is one of the top ten mysteries in the scientific community today. The classmate who was sleeping, wake him up and ask him to answer what the Cambrian Explosion is about." The biology teacher pointed at Liu Liang, who was stunned, and then woke up his sleeping classmate - Yan Jinger. "The teacher is asking you a question. What is the Cambrian Explosion?" Liu Liang poked Glasses with his elbow and whispered the teacher's question to his deskmate. His sweet dream was disturbed. Glasses stood up reluctantly, adjusted his glasses that were crooked because he had been lying down for too long, and rubbed the wrinkles on his face caused by the clothes. Then he muttered: "The Cambrian Explosion was probably hundreds of millions of years ago, when life on Earth suddenly evolved. The speed of evolution was hundreds of millions of times that of the previous one. It seems that there was no higher life before that, but suddenly there was after that. It seems that all the existing species on Earth were produced in that period." "Hundreds of millions of years ago? From what form did life evolve to what form? These are all test points. Remember the specific numbers." The teacher waved his hand and asked Glasses to sit down. "But your summary is still good, but one thing should be remembered in particular. During the Cambrian explosion, not only did all species evolve at superluminal speeds, but new species were also produced at superluminal speeds. Almost all the ancestors of current species were formed in that period, including sponges, cnidarians, branchiophores, lobopods, brachiopods, mollusks, arthropods, echinoderms, chordates, etc. Now, all species were produced in that era." "Creation is amazing! The emergence of the Cambrian period is strong evidence to refute Darwin's theory of evolution. Darwin himself has always been puzzled by this matter." "Teacher, are you questioning Darwin's theory of evolution?" A loud voice came from a corner of the classroom-it was the good student Jiang Shun. "Well, yes, why not?" The glasses teacher smiled and said, "There are three levels of arguments, nonsense - theory - law. Darwin's theory of evolution is just a theory, why can't we question it? You can question it, not to mention that he himself has questioned it." "Since we are talking about this today, although it is not a test point, I will also mention it. It is about the cause of the Cambrian explosion of life." "Now the argument that is tenable in the academic community is that the earth suddenly produced a large amount of free oxygen at that time, which led to the large-scale, widespread and rapid evolution of organisms, but I feel that this argument is also full of loopholes. If it is only oxygen, how can organisms reproduce and evolve at the speed of light?"