This is Charles Darwin or more commonly known as Darwin. Darwin is a biologist from England who is more commonly known for his theory of Evolution. He is also known for his work and discovery on Natural Selection
This is Jean-Baptiste Pierre Antoine de Monet Chevalier de Lamarck or more commonly referred to as Lamarck. Lamarck is a biologist who is known for his book Flore Française, which contains the first dichotomous key. He was also the first to give a term to the animals with out back bones- "invertebrate".
Darwin traveled to the Galapagos where he then made a shocking discovery involving his theory. Birds of the same species all around the island had different beaks. He though of this to be how the birds adapted to the different areas around the island.
Where as before his theory was a possibility, Lamarck had done different work. He started off writing a french book on the Plants in France, where he used the first ever dichotomous key. He also did research on fossils and other species where he gave the name 'Invertebrate' to animals without back bones
Both men have been chosen to debate at the Royal Society of London for Improving Natural Knowledge. Both men will be debating the topic of 'Evolution', and their theories for it.
"Changes in an organisms life will not affect the evolution of the species"
"The changes that an organism undergoes will be passed on to its offspring"
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