The atom theory changed over time because of conflicting experiments which led to revisions, such as when Rutherford revised Thomson's plum-pudding model to include the nucleus. Also, another reason for the atomic theory to change is technological advancements. For example, a scanning tunneling electron microscope, is now used for studying atoms.
Evolutionists often make the distinction between evolution as a fact and evolutionary theory What does this mean?
Evolution is descent with modification. Or, change over time. And formally as the change in allele frequencies over time in a population of organisms. This is an observed and a observable fact. The theory is; the theory of evolution by natural selection, which explains the fact of evolution. Natural selection is the main mechanism ( there are others ) that drives the adaptive change in organism that can lead to speciation, or just simple evolution.
The theory of evolution by nature selection explains in scientific termshowliving thing evolve over time?
Only one of the ways things evolve over time. There is also gene flow and genetic drift, both of which are also evolution, the change in allele frequency over time in a population of organisms. So, the theory of evolution by natural selection answers the species problem; how organisms adapt and branch into new species over time.
Evolution is and it is whether " modern " or " ancient. " Evolution is the change in allele frequency over time in a population of organisms. Change over time. The theory that explains much about evolution. Natural selection is the nonrandom survival and reproductive success of randomly varying organisms.