For example, the problem of population, resources, environment, and so on.

如人口问题、资源问题、环境问题，等等。

youdao

The problem of population control has to be recognized and approached in a world environment context.

译文：人们必须联系世界环境去认识和研究人口控制问题。

youdao

The problem of population and economy is one of the long term problems noticed by human society and is the most important research contents of population economics.

人口与经济问题是人类社会长期关注的问题之一，也是人口经济学最重要的研究内容。

youdao

But City Councilor Mara Rumiz says authorities are aware they cannot ignore the problem of the shrinking population any longer.

VOA: standard.2009.11.14

The problem with--there's a problem with gambling behavior because in a certain fraction of the population we have pathological gambling.

赌博行为有个特殊情况,在人群中总会有一小撮人,我们称之为病态赌博

耶鲁公开课 - 金融市场课程节选

"So,this kind of cyclical problem of displacement is extremely unsettling for the population and limits the possibility for the population to reinvest in economic activities such as agriculture,commerce and so on and so forth,".

VOA: standard.2009.09.25

Bradford, after correctly identifying the problem of population decline, does not point (as far as I know) to a reversal of the decline as a potential solution, nor do any of the economists the Times reach to talk about his findings.

FORBES: The Key To The Next Industrial Revolution Is Staring Us In The Face And We Pretend Not To See It

On top of this lies the problem of an aging population, exacerbated by the size of the baby boomer demographic.

FORBES: mHealth: The Next Frontier For Mobile Service Growth

"The water problem all over the world is because of a population problem, " he said.

BBC: Iran drought hits rice farmers