In here, he explained the theory of evolution by natural selection. Natural selection, he said, is “where some traits were favored in an environment over others” (Than, 2015). Than (2015) also added that “natural selection can change a species in small ways, causing a population to change color or size over the course of several generations … or create an entirely new species.” Darwin also explained evolution using the origin of whales. He used bears in his speculation that land mammals can later evolve into whales, but he was ridiculed for that due to the lack of evidence. Scientists today knew that what he was trying to explain is a fact, but he was not able to use the right example. Some remains of evidence were later found that proved the theory of evolution of whales coming from land mammals. It is also believed today that the evolution of whales is one of the “best examples scientists have of natural selection.” He also used the line “survival of the fittest,” which was commonly misinterpreted. Some people associated the word fittest to their strength. However, this meant to be the ability of the organisms to survive and reproduce given certain …show more content…
One is because of the controversy of the topic. One of his grandfathers, Erasmus Darwin, was also ridiculed because of his book Zoonomia. In this book, he also somehow talked about the early ideas about the theory of evolution. People who believed that God created everything in the universe were not satisfied of his theory. Therefore, Charles Darwin decided to collect more evidence to have greater arguments. It took him almost two decades before he decided to publish his book. The term evolution was not used straightaway, it was in six edition when it was seen. Moreover, a guy named Alfred Wallace sent Darwin an essay about his study and he found it to be similar as his work. This made him publish his first book. He still gave Wallace credit for his work. Evidences found later proved that Darwin got the idea first before Wallace (“Darwin and Natural Selection,”