Thomas Malthus' work originated around population statistics and how they are affected by different factors. His work was instrumental for Darwin and Wallace's proposal of natural selection. Just to add, no he did not propose a theory of evolution.
Darwin observed that high birthrates and a shortage of life's necessities forced organisms into a constant "struggle for existence", both against the environment and against each other is which led Darwin to propose his theory of constitution
Charles Darwin. His theory is The Theory of Natarual Seletion. A theory that has been proved even today
Gradualism is the concept but I would not give it the ranking of scientific theory. It is more a subset of the theory of evolution by natural selection and was first formulated into that theory by Darwin.
Darwin's theory of evolution as proposed in "On the Origin of Species" does not differ from what scientists have discovered. The ongoing work still proves the theory today.Bearing in mind that Darwin, and all others, did not know anything about genetics at the time he was writing, it is remarkable that he was able to propose the theory along with Alfred Russel Wallace at the time.
Darwin .
he proposed a theory about natural selection
Thomas Malthus' work originated around population statistics and how they are affected by different factors. His work was instrumental for Darwin and Wallace's proposal of natural selection. Just to add, no he did not propose a theory of evolution.
1905
Democritus
Yes
Darwin observed that high birthrates and a shortage of life's necessities forced organisms into a constant "struggle for existence", both against the environment and against each other is which led Darwin to propose his theory of constitution
They both propose that organisms are not immutable, but changes over time. However the mechanisms of the two theories are very different.
Schleiden and Schwann
The theory of evolution was accepted by scientists in 1859, Darwin's first book was published the same year that his theory was accepted.
no Charles Darwin was the first scientist to develop the theory of evolution. Einstein was a math teacher. and was first put into 'special' classes
John Dalton first pursued research into atomic theory. He was the first person to propose the existence of the atomic structure.