1.   Congestion and land hunger were particularly acute in Lewis, because of the rapid population increase.

2.   The big population increase in the US was partly the result of immigration.

3.   The population increase in the region is a cause for concern.

4.   As the average age of the population increases, there are more and more old people to care for.

5.   They advance evidence for population increase in the countryside, and for the expansion in agrarian production.

6.   Such costs increase as the population size increases.

7.   And he said the cap would include provisions to soften the blow to states in case of major population increases or economic downturns.

8.   But both regions experienced significant population increases in the cities, compared with the previous decade.

9.   But those efficiency gains have been more than offset by huge population increases and rising worldwide energy consumption.