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Theory of Natural Selection
After reading about the Malthusian catastrophe, that when a population grows unchecked and eventually exceeds food supply, Darwin had the idea that certain variations would favor some for survival and others for destruction. He would later call this his theory of natural selection. Link text Encyclopedia Britannica, 2018. Charles Darwin. Retrieved from https://www.britannica.com/biography/Charles-Darwin -
Evolutionary Branches
Darwin managed to resolve the last issue with his theory of natural selection, how genera forked to create new evolutionary branches. Nature favored traits that took advantage of different aspects of a niche. Encyclopedia Britannica, 2018. Charles Darwin. Retrieved from https://www.britannica.com/biography/Charles-Darwin -
Generational Variations
He no longer believed that evolution was triggered by environmental change. Instead, he believed that each variation was imperfect and there was a constant struggle for "survival of the fittest." Encyclopedia Britannica, 2018. Charles Darwin. Retrieved from https://www.britannica.com/biography/Charles-Darwin -
On the Origin of Species Released
Darwin published a book called The Origin of Species. The book is on his theory of natural selection and how it can explain variations between similar species of living things. More of a species is born in a generation than can survive, variations exist that can be passed on, so those with traits more suited to the environment will survive. Encyclopedia Britannica, 2018. Charles Darwin. Retrieved from https://www.britannica.com/biography/Charles-Darwin
