Beginning of Essay
We act like animals, we eat like animals, and we are animals. The many theories of evolution such as Darwin’s theory of evolution prove to us that we choose to believe that we are not animals when we really are. Evolution is the sequencial process of chang ....

Middle of Essay
.... anatomy that life on earth had endured many changes through a long period of time. In the early 1800s, another French naturalist named Lamark, proposed the first complete theory of evolution. He observed through is observations, depending on the extent to which the use of the structure, that an animal’s body structure is able to change during its life span. He also noted that organs and muscles, which were used often, tended to become larger and stronger. On the contrary, the organs and muscles, which were used seldom, tended to become smaller and diminish. With these observations, Lamarck concluded that these characteristics we ....