It was possible to maintain aerobic conditions in the pond by regular additions of sodium nitrate until the temperature decreased and the algae population changed from blue-green to green algae.

This population decreased drastically around the start of the 20th century as a result of extreme fur prices which caused severe hunting also during population lows.

Ignoring immigration and emigration, the population of Swiss citizens decreased by 834 while the foreign population increased by 446.

The population of white-grubs dramatically decreased, and this was attributed to the cane toad at the annual meeting of the International Sugar Cane Technologists in Puerto Rico.

Carson City's population and transportation traffic decreased when the Southern Pacific Railroad built a line through Donner Pass, too far to the north to benefit Carson City.

Davenport has seen steady population growth since its incorporation, with an exception being the 1980s, when the population decreased due to job loss.

The population decreased to 1, 340, 194 in January 2011, which is even lower than the number of people that lived in Estonia in 1970.

For those reasons, the population decreased in the plains, while increasing on the mountains.

The total industrial production ( within the pre-1939 borders ) had barely increased between 1913 and 1939, but because of the population growth, the per capita output actually decreased by 17. 8 %.

Since the previous census in 2000 the country's population decreased by 309 thousand or 13 %.

Thirty percent of the population is estimated to be under the age of 15, but this proportion has decreased considerably during the past decades.

Even as the population of active players on " LambdaMOO " has decreased greatly, the players still remaining are part of a tight community that have known each other for years.

Ignoring immigration and emigration, the population of Swiss citizens decreased by 22 while the foreign population increased by 496.

During the last half of the 18th century and the first half of the 19th migrations to the countryside decreased Panama City ’ s population and the isthmus ' economy shifted from the tertiary to the primary sector.

Poverty has steadily decreased in 18 % since 2004, when nearly half the country's population was under the poverty line.

As their numbers decreased along with their habitat, the birds could no longer rely on high population density for protection.

Ainu population decreased drastically in the 19th century, due in large part

Thus, first slavery and then serfdom gradually decreased in Europe as the population grew, but were reintroduced in the Americas and in Russia as large areas of new land with few people became available.

Taiwan's agricultural population has steadily decreased from 1974 to 2002, prompting the Council of Agriculture ( COA ) to introduce modern farm management, provide technical training, and offer counseling for better production and distribution systems.

Within 22 years, the percentage of the population living below the national poverty line decreased dramatically from 42. 21 in 1988 to 7. 75 in 2010.

Regardless of rights and wrongs, a population and an area appropriate to a pre-World-War- 1 great power have been, following conquest, ruled against their will by a neighboring people, and have had imposed upon them social and economic controls they dislike.

As for progress, the `` backward South '' can boast of Baton Rouge, which increased its population between 1940 and 1950 by two hundred and sixty-two percent, to 126,000, the second largest growth of the period for all cities over 25,000.

They, however much they were in disagreement with the late Victorians over the method by which Britain was Germanized, agreed with them that the end result was the complete extinction of the previous Celtic population and civilization.

On the one hand, the Public Health Service declared as recently as October 26 that present radiation levels resulting from the Soviet shots `` do not warrant undue public concern '' or any action to limit the intake of radioactive substances by individuals or large population groups anywhere in the Aj.

In order to assist the States in maintaining basic vocational rehabilitation services, Section 2 of the amended Act provides that allotments to States for support of such services be based on ( 1 ) need, as measured by a State's population, and ( 2 ) fiscal capacity, as measured by its per capita income.

Multiply the population of each State by the square of its allotment percentage.

It would seem necessary that members of this population provide support for one another since it is not provided by the larger society.

Yet, the object of the element of achieving through the process of goal attaining for this population appears to have been changed by circumstances brought about by the war.

The four functional problems of a social system are, to some extent, solved by the subsystems within this population.

The values placed by the Brandywine population, upon maintaining a certain homogeneity, a certain separate racial identity, and therefore a certain separate social status, are important for the morale of the system.

Examples from this population indicate that deviance seems to be sanctioned by ostracism from the group.

In 1922 a continuous registration of the whole indigenous population was instituted by ordinance of the Governor-General, and the periodic compilation of these records was ordered.

The areas to be examined in these inquiries were selected by local officials, supposedly as representative of a larger population.

Sample areas in the new investigations were selected strictly by application of the principles of probability theory, so as to be representative of the total population of defined areas within calculable limits.

That reference in the Report is `` continuation of the trend toward an all-Negro school system '', a remark apparently occasioned by the increase of Negro school population from 74.1 per cent to 76.7 per cent.

Only a radical change in the nature of the population in the central city would be likely to destroy this preference -- and we must now turn our attention to the question of whether such a change, gloomily foreseen by so many urban diagnosticians, is actually upon us.

The potato chip industry these days is growing, not only as a result of population increase and public acceptance of convenience foods, but also because of a combination of circumstances that has led to growth by merger.

They hope, of course, to reclaim the non-Catholic population to the Catholic faith, and at every Sunday Benediction they recite by heart the `` Prayer for England '':

For almost one-sixth of the national population discrimination in the free selection of residence casts a considerable shadow upon these values assumed as self-evident by most Americans.

Negro population in the U.S. has increased 25 per cent while the white population was growing by 18 per cent.

The largest city by population is Birmingham.