11.   Its transmission network links it to utilities in the East where dense populations and strict environmental rules make power prices higher.

12.   New Jersey, with its higher-than-average income and dense population, has been one of the most attractive markets to out-of-state buyers this summer.

13.   The market area, with its congested shopping streets, narrow alleys and dense population, has been the site of many previous terrorist attacks.

14.   They also were told of air pollution, traffic jams and dense population areas.

15.   They were astonished to find such a dense population of galaxies so far away and so early in time.

16.   This significant increase in bear numbers amid a fairly dense human population has made it apparent what the black bear is all about.

17.   It lies within a dense population area and cannot be expanded.

18.   The lake chains and reservoirs are more problematic, since dense population, intensive agriculture and industry may cause quite extensive pollution.