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Essay Archive - Thoeries of Evolution
Thoeries of Evolution
Evolution is the process by which living organisms originated on earth
and have changed their forms to adapt to the changing environment. The earliest
known fossil organisms are the single-celled forms resembling modern bacteria;
they date from about 3.4 billion years ago. Evolution has resulted in
successive radiations of new types of organisms, many of which have become
extinct, but some of which have developed into the present fauna and flora of
the world (Wilson 17).
Evolution has been studied for nearly two centuries. One of the
earliest evolutionists was Jean Baptiste de Lamarck, who argu....
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