The most worrying of climate change's impacts - food and water shortages, forced migration, health epidemics - are exacerbated by population growth.

最令人担忧的是气候变化带来的影响——食品和用水短缺、被迫迁移、流行病蔓延——都会因人口增长而加剧。

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Climate change will have major consequences for food production, water availability, ecosystems and human health, migration pressures, and regional instability.

气候变化将带来食品生产，可用水，生态系统以及人类健康，迁移压力，地区不稳定性方面的重大后果。

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The survey also found that birds were altering their nesting and migration patterns, and travelling further to find food.

研究同时发现，有些鸟类的筑巢、迁徙习惯也有所改变，为了觅食，它们需要飞行更多距离。

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The International Organization for Migration says shelter, food and employment remain the most pressing needs of most of the more than 1.5 million people displaced by the bombing.

VOA: standard.2009.09.20

But scientists who study whales are seeing migration patterns shifting as the result of climate change, as the ocean warms and food supplies change.

NPR: Natural Resources Key to Alaska Town's Future

What's more, the parts of the world where populations are growing fastest are also those most vulnerable to climate change, and a rising population will exacerbate the consequences of global warming water shortages, mass migration, declining food yields.

ECONOMIST: Demography, growth and the environment