21.   The incidence of broken hips has increased as the population has become older.

22.   The population was becoming working class.

23.   The population is also becoming more literate.

24.   The population has become somewhat taller and a good deal heavier but also far more diverse in size and shape.

25.   Their population has become quite large, and since they are protected, they do not fear humans.

26.   Their populations have become convenient local customers.

27.   Amnesty said both sides engaged in human rights violations in the name of security, but the Palestinian population has become the main victim of the violations.

28.   Both islands remain underdeveloped, and the population has become impoverished and envious of the better conditions on Mayotte, which voted to remain a colony.

29.   But as the population became increasingly mobile, the censuses overlapped.

30.   Eventually, he said, a fish population becomes so short of spawners that mates are scarce and the whole reproduction cycle of a species is disrupted.