http://web.archive.org/web/20110111025900/http://www.episcopalchurch.org/19021_58398_ENG_HTM.htm
What is biological evolution?
......Biological evolution means that living things change over time. A great variety and diversity of organisms have come into existence over the past four billion years from one or a few original life forms. All living things—bacteria, archaebacteria, protists, fungi, plants and animals, including human beings—are descendants of other life forms, most of which are extinct. The evidence for evolution shows that all life on earth is related and interconnected, and is often depicted as a great "Tree of Life." Evolution happens gradually, sometimes at a rapid rate and sometimes slowly, but never with discontinuities. Evolution happens because of natural selection; in the face of environmental pressures, some organisms will survive at higher rates than others. Charles Darwin was the first to bring together all these ideas. Scientific researchers since Darwin have refined and added to them, but never thrown out his basic theoretical framework.............
Rephrase:
The basic theoretical framework of Darwin was that in the face of environmental pressures, some organisms will survive at higher rates than others.
Rephrase: Darwin's framework was that for whatever reason, some organisms will survive at higher rates than others.
Rephrase: For whatever reason, some organisms will survive at higher rates than others.
Rephrase: For whatever reason, some will increase , while others decrease as they engage in PatrickMatthew's natural means of competitive selection, leading eventually to the formation of new species.
Rephrase: Some will increase , while others decrease as they engage in PatrickMatthew's natural means of competitive selection, leading eventually to the formation of new species.
This is not falsifiable, because if the other creature survived or became more common we would be told the same thing. It also assumes the premise in the conclusion, namely that there indeed was a transition between species over millions of years, the very point under dispute.
Rephrase again[]
Another rephrase , this time making the underlying premise that is being assumed clear:
Rephrase: The basic theoretical framework of Darwin was that in the face of environmental pressures, some organisms will survive at higher rates than others and acquire attributes in their descendents that weren't previously there.
Rephrase: Darwin's framework was that for whatever reason, some organisms will survive at higher rates than others, acquiring previously non-existent attributes.
Rephrase: For whatever reason, some organisms will survive at higher rates than others.
Rephrase: For whatever reason, some will increase , while others decrease as they engage in PatrickMatthew's natural means of competitive selection, leading eventually to the formation of new species.
Rephrase: Some will increase , while others decrease as they engage in PatrickMatthew's natural means of competitive selection, leading eventually to the formation of new species, with new attributes that weren't in the previous generations.