Реферат: Evolution Essay Research Paper We actlike animals

synthetic theory which combined Darwin’s theory of natural selection with the ideals

of genetics.

In 1808, French naturalist Chevalier de Lamarck contemplated a theory of

evolution, although, his theory of evolution did not gain any recognition until

1858. In 1858, British naturalist Charles R. Darwin furnished his theory of

evolution, also known as Darwin’s theory. Along with Darwin’s theory of

evolution there early theories and the synthetic theory. In 1858, Charles

Darwin furnished his theory of evolution and the majority of scientists accept

the Darwin theory today. The Darwin theory states that all species evolved from

either many or few common ancestors or descendants under circumstances of

natural selection. Three chief resources aided Darwin to develop his widespread

theory of evolution. One, his personal observations, two, the geological theory

of British scientist Sir Charles Lyell, and three, the population theory of the

British economist Thomas Robert Malthus. Aboard the H.M.S Beagle from 1831 to

1836, Charles Darwin made many of is observations in his quest to propose his theory

of evolution. On the coast of South America, Darwin came under the possession

of many specimens of plants and animals. On the Galapagos Islands, off the

coast of Ecuador Darwin discovered many differences between species on the

islands and with the species on the mainland. For example, Darwin noted that

certain fossils of extinct species were closely similar to living species in

the same geographical area. Darwin also observed that each island possessed its

own form of tortoise, mockingbird, and finch. He also discovered various forms

of these species were closely similar but differed in structure and eating

habits from island to island. In addition, Darwin discovered varieties of

differences between species on one island and another island. With each

observation, Darwin come to the question of possible links between distinct but

similar species.

British economist Thomas Robert Malthus aided Darwin in creating the theory of

natural selection. Malthus proposed how human populations remain in balance. He