11.   The Sisseton-Wahpeton reservation has seen its welfare population shrink in the last few years.

12.   When any population shrinks, particularly to the level of tens of thousands, a phenomenon called genetic drift may become important.

13.   Everywhere else, the Jewish population is shrinking.

14.   Illegal hunting and encroachment on the natural habitat of the leopard-like animals has caused the population to shrink dramatically.

15.   The massive loss of lowland forests is the reason why the animal population has shrunk considerably.

16.   In recent years, the Russian population has been shrinking by a million people annually.