Sometimes the word indicates
simply descent with modification, leaving open the question of how the staggering changes in life forms could possibly have occurred.
Macroevolution posed a problem to Darwin because his principle of
descent with modification predicts gradual transitions between small - scale adaptive changes in populations and these larger - scale phenomena, yet there is little evidence for such transitions in nature.
Evolution is
descent with modification.
Rather, it's descent from a common ancestor (the scientific phrase in use currently is «
descent with modification» meaning they share similar underlying foundation, but when they migrate (those that survive) they evolve based on environmental triggers (challenges), which give rise to mutations; that make future generations better suited to live in the new environment.
Provided that that unfortunately loose term evolution means strictly «
descent with modification,» it hardly seems possible to deny it without denying the findings of genetics.
The theory, also known as «
descent with modification,» posits that new species have evolved following many minor changes from parents to offspring over billions of years.
But sometimes consensus just means that there is a consensus of skeptics (e.g., Wegener's theory of continental drift was proposed in 1912 based on continent shapes but was not widely accepted until 50 years later because the smoking gun — deep sea rifts — hadn't been discovered) or there is consensus because the data is overwhelming (e.g.,
descent with modification).