ies of evolution. He believed that changes in the environment change an organisms behavior which leads to less or more use of a given structure. This "First Law" says structures of an organism get larger, smaller, or even disappear depending on use in its lifetime. His "Second Law" states that those characteristic changes are passed on to the offspring. Lamarck constantly struggled with poverty and his last years (in which he was blind) were spent in the care of his daughters. He died December28, 1829 and was laid to rest in a rented grave after a poor man's funeral.
Born in Shrewsbury, England to Robert Waring Darwin and Susannah Wedgewood Charles Robert Darwin would become known as the discoverer of Natural Selection. Not being a very good student, his father removed him from Reverend Butler's school at Shrewsbury in 1825 when Charles was 16 telling him the he "cared for nothing but shooting, dogs, and rat-catching, and you will be a disgrace to yourself and all your family". In October of that year Charles started medical school at the University of Edinburgh. He found medicine boring and hated the sight of blood so after two years he quit and went home. His father, afraid of having his lazy son do nothing, made him go to Cambridge to study Theology. While at Cambridge Charles became interested in botany and studied geology. He received his B.A. in 1831 but instead of a career in the church he took a non-paying position as a naturalist aboard a ship leaving England on December 27, 1831. The H.M.S. Beagle was going to survey the southern coasts of South America. All of Darwin's field research was done during his five years voyaging on the Beagle. He spent the rest of his life on researching and writing about his findings. From 1839 to 1881 Darwin had 25 books published. His most important work, The Origin of Species, was published in 1859. Darwin's Theory of Evolution – that o...