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Lamarck was one of the first scientist to suggest the idea of evolution, well, not really evolution but he recognized that organisms will change over time, will adapt to their environment and that all specie were descended from another species. He kind of had three ideas, one of them was that all animals would change/adapt towards to perfection and complexity, it like saying that they will evolve to be more complex and better. He also said that animals in their life time could alter their size, shape or some part of their organ so that they are better suited to their environment. The last is inheritance of Acquired trait, which by the way this was proven wrong, but it basically said that if you had a dog who lost it tail, then the offspring of that dog will also have no tail.

Hope this answers your question :)

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Who proposed that the selective use or disuse of an organ led to a change the organ that was then passed to the offspring?

Jean-Baptiste Lamarck proposed this idea in his theory of inheritance of acquired characteristics. He suggested that organisms could pass on traits acquired during their lifetime to their offspring, leading to evolutionary change.


What scientist first described evolution as a process of adaptation?

Jean-Baptiste Lamarck, a French scientist, was one of the first to propose a comprehensive theory of evolution in the early 19th century. He suggested that organisms can adapt to their environment through the inheritance of acquired characteristics.


Who proposed that acquired traits could be passed on to an organisms offspring?

Jean-Baptiste Lamarck proposed the theory of inheritance of acquired characteristics. He suggested that organisms could pass on traits acquired during their lifetime to their offspring. This idea has been largely discredited in modern biology.


What scientist proposed that all organisms evolved toward perfection and complexity?

Jean-Baptiste Lamarck proposed the theory of evolution known as Lamarckism, which suggested that organisms evolve toward perfection and complexity through the inheritance of acquired traits. This theory has been largely discredited in favor of Charles Darwin's theory of natural selection.


Whose theory of evolution conflict with Darwin's theory of evolution?

French naturalist Jean-Baptiste Lamarck's theory of evolution conflicted with Darwin's theory. Lamarck proposed that acquired characteristics could be passed down to offspring, while Darwin's theory emphasized natural selection and gradual change over generations.