21.   Then they compared otter population trends in two places on Adak Island where circumstances had by chance created experimental and control groups.

22.   To help us arrive at a bid for pork bellies, we have information about bacon consumption, population trends, herds on hog farms and so forth.

23.   Without endorsing the idea, the two public members also suggested lawmakers consider indexing Social Security benefits to changes in population trends or the economy.

24.   You say you like demographics because population trends are predictable.

25.   An assessment of population trends, the sheet is prepared for the bureau, a private nonprofit educational organization, by demographers Carl Haub and Machiko Yanagishita.

26.   Nearby, commission delegates discussed scientific studies on minke whale population trends.

27.   Nearby, commission delegates discussed studies on minke whale population trends.

28.   Positive signs do exist in population trends.

29.   The finding was included in the annual report on global population trends by the Washington-based Population Reference Bureau.

30.   The monthlong conference started Thursday with a scientific committee meeting to discuss population trends among minke whales.