The sharp increase of population size and constant enlargement of economic activity scale have aggravated the contradiction between population and environment.

人口数量的激增和经济活动规模的不断扩大，加剧了人口与环境之间的矛盾。

youdao

This article makes analysis of the factor of population in Qinghai-Tibet Plateau, and the mechanism of the formation of population and environment problems in this area.

本文就青藏高原地区的人口因素及其对该区域人口环境问题形成的机制进行了分析。

youdao

The environment is awful because the population is too large and too much rubbish make the air unfresh.

因为众多的人口和大量的垃圾污染了空气，所以（城市）环境是很可怕的。

youdao

She says different countries need different solutions based on location,environment, climate and population needs.

VOA: special.2009.07.28

But it's all different degrees of terrible, if you will, because so many people in the population share that biological vulnerability and when the environment changes, we have the problems.

只要愿意,这造成的恐慌程度是不同的,因为在人群中有很多这样的群体,他们都有这种生物易损性,当环境发生变化时,就会出现问题

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Rampant population growth and changes to the environment caused by humans, including the burning of fossil fuels and the conversion of nearly 43% of the planet's land to farms or cities, threaten to cause an abrupt and unpredictable shift in the global ecosystem, 22 scientists from five countries said in their paper.

CNN: STORY HIGHLIGHTS

Each year, the effects of population growth on natural resources and the environment are being recognized.

FORBES: U.S. Needs Immigration Reform - Part 3

Without going into the specific reasons for immigration or their merits (or demerits), it is enough to note that the political leadership in the United States must consider the effects of population growth on natural resources and the environment as it considers immigration reform.

FORBES: U.S. Needs Immigration Reform - Part 3