Those are examples of population problems.

那些都是人口问题的例子。

youdao

The basis for effective solution of population problems is, above all, socioeconomic transformation.

有效地解决人口问题的基础首先是社会经济状况的改变。

youdao

Population problems are those at the country level, hence must be dealt with by the country's government with a "visible hand".

人口问题属于国家级问题，必须由国家出面，用“看得见的手”去解决。

youdao

Orange County used to be a metaphor for bland homogeneity, its politics solidly Republican, its population overwhelmingly white, its problems small-town.

ECONOMIST: Orange County

The report calls for more emphasis on engineering solutions to problems caused by rapid population growth, particularly in sub-Saharan Africa.

BBC: Harrabin's Notes: Population overload?

The building of more freeways in relatively low-population areas will not solve the congestion problems in the cities where the concentration of buyers is located.

FORBES: China's Auto Industry Shows Signs Of Impending Gridlock