人じん口こう問もん題だい

noun

population problem

Refers to issues arising from population size, growth, decline, or distribution, often in social, economic, or environmental contexts.

• 人じん口こう問もん題だいは多おおくの国くにで深しん刻こくな課か題だいだ。

  The population problem is a serious issue in many countries.

• 高こう齢れい化かに伴ともなう人じん口こう問もん題だいが議ぎ論ろんされている。

  Population problems associated with aging are being discussed.