What evidence did scientist use to support evolution theory?

Answer 1

First of all, evolution is a FACT not a theory. You must be referring to Charles Darwin's theory of evolution by means of natural selection. There is no denying the fact that evolution happens, scientists just didn't know exactly how it worked until Darwin suggested one plausible scientific explanation which he called natural selection. Natural selection is simply the change in allele frequencies of an organism which results that organism becoming either better or worse suited to survive in its environment. Being better suited to survive means that the organism is more likely to pass on the beneficial genetic trait to it's offspring.

Rather than asking for evidence which helps prove evolution, try looking for verifiable scientific evidence which disproves it. After all, science is not about making claims and looking for evidence to prove them, but rather generating hypothesis and looking for ways to disprove them.

Answer 2

Evidence of evolution includes biogeography, the fossil record, taxonomy, comparative anatomy, comparative embyrology, and molecular Biology.

Today, the most useful and accurate evidence comes from molecular biology. Note that Darwin did not utilize this category.