Final answer:
The chapters "Instinct", "Hybridism", and "Geographical Distribution" are from Charles Darwin's "On the Origin of Species", which outlines his theory of evolution by natural selection based on his research and observations.
Step-by-step explanation:
The chapters "Instinct", "Hybridism", and "Geographical Distribution" are found in the book On the Origin of Species by Charles Darwin. This seminal work, published in 1859, discusses Darwin's theory of evolution by natural selection and contains extensive discussions on various topics like the geographic distribution of organisms, the concept of species hybridization, and the role of instincts in the behavior of species. Darwin's theory was based on extensive research and observations made during his voyage aboard the HMS Beagle, which provided him with a wealth of evidence from around the world, including the unique fauna of the Galapagos Islands.