21.   He said such a system would help e-cash overcome the same suspicions that greeted paper money, credit cards and other evolutionary changes in money.

22.   In choosing Labastida, the PRI appears to have opted for continued evolutionary change, though probably at a slower pace than in the recent past.

23.   Isolated from similar species on other sky islands as effectively as if they were in the Galapagos, they represent especially potent raw material for evolutionary change.

24.   It was no time to talk of evolutionary changes.

25.   Most evolutionary changes, he noted, start with an existing structure and develop a new function for it.

26.   Sexual selection stands with natural selection as a mighty engine of evolutionary change.

27.   These questions have long puzzled and divided anthropologists studying crucial evolutionary changes in the early hominids, or human forerunners, after their divergence from the apes.

28.   Two years ago, however, several teams of molecular geneticists developed what they called a genetic clock to calculate the estimated rate of evolutionary change in animal life.

29.   Critics fear that evolutionary change will be forgotten with the new road, lost in the dust of increased tourist traffic.

30.   Evolutionary changes, however, are more pronounced in water striders than in birds or mammals.