No matter what your main field of study is you are sure to write essays on evolution after all. This topic is among the ones that have to be studied by everybody. Probably, that is why there are so many samples of the evolution essay on the internet. Such papers consist of the introduction that gives the popular scientific opinions on the question, great outline of the main body where you investigate the topic, and conclusion with your final thoughts.
Genome, Heredity, Global warming, Life, Cell, Gene, Evolution, Alfred Russel Wallace