That affects the economy. In rural communities, if the population is always sick, they can't work in the fields and production suffers.

VOA: standard.2009.04.25

I don't know if like the immigrant population is, in America is growing, but

我不知道美国的移民人口是不是在增加，但是

中国的影响力 - SpeakingMax英语口语达人

And this is a conservative response to the mobilization of French workers, and this says the working class population won't at all listen to bad advice.

这是对于,法国工人运动的一个保守回应,这意思是,工人阶级,不会听从不合理的建议

耶鲁公开课 - 1871年后的法国课程节选

For Riis, the slum's biggest problem wasn't population density, lack of sunlight or even disease.

FORBES: Magazine Article

If births don't add to the population, and immigration isn't the whole story, accounting for around half of net population growth, where does the rest of America's growth come from?

ECONOMIST: Lack of ability

"There is no hope for anything if you don't have a population that buys into" a strong and free society, he says.

WSJ: The Weekend Interview with Donald Kagan: 'Democracy May Have Had Its Day'