Over time, evolutionary change gives rise to new species. Darwin called this process 'descent with modification,' and it remains a good definition of biological evolution today. For Charles Darwin, descent with modification was the origin of all living things after the first organisms. But this is clearly an evasion. No rational person denies the reality of change, and we did not need Charles Darwin to convince us of it.
Nobody believes that biological evolution is simply change over time.
Only slightly less evasive is the statement that descent with modification occurs. Of course it does, because all organisms within a single species are related through descent with modification. We see this in our own families, and plant and animal breeders see it in their work. But this still misses the point. No one doubts that descent with modification occurs in the course of ordinary biological reproduction.