Some of his first research was on worms and insects, and he is credited with coining the word "invertebrates".   
Some of his first research was on worms and insects, and he is credited with coining the word "invertebrates".   He identified two forces for evolution, noting how the complexifying force will produce new organs while the adaptive force will strengthen the most used organs through evolution, and that time and favorable conditions were the two means that nature has given for evolution. An example of that is young giraffes having slightly longer necks than their parents to reach the higher leaves to support his theory of evolution.   FTP, identify this man who created the first coherent theory of evolution, famous for his basic use and disuse theory and the inheritance of acquired characteristics.
Some of his first research was on worms and insects, and he is credited with coining the word "invertebrates".   
Jean-Baptiste {Lamarck}