A variance is an exception to one or more of the zoning restrictions on a piece of property. A variance is different from a nonconforming use, which permits existing structures and uses to continue when zoning is first instituted.
The book, On The Origin Of Species,  suggested  that organisms evolve through the process of natural selection.opulations evolve as the individual organisms less able to survive in the current environment die and fail to reproduce. That is natural selection.
The species would have changed, or evolved. Darwin called this process 'natural selection', and it was one of his most important ideas. He explained in the book called 'On the Origin of Species' which was published in 1859. Darwin developed his own ideas on natural selection.He later used these ideas to explain how humans had evolved from earlier ancestors.His book 'The Descent of Man' was published in 1871.arwin started to think about the meaning of all he had seen on his journey as soon as he returned to England. He became certain that all creatures had developed, or evolved, slowly over time to adapt to different situations. This was not a completely new idea, but Darwin took it further than anyone else.