相反，当大气二氧化碳浓度低时，气孔密度似乎增加了——就像长出更多的嘴来呼吸。
Conversely, when atmospheric carbon dioxide is low, stomatal density tends to increase - it's like getting more mouths to breathe with.
林木和其他类植物可以维持星球适宜温度，但是大气中二氧化碳浓度的增加会减低这种调节作用。
Trees and other plants help keep the planet cool, but rising levels of carbon dioxide in the atmosphere are turning down this global air conditioner.
当二氧化碳在海水中溶解，氢离子浓度会增加，使海水变得更酸。
When carbon dioxide dissolves in seawater, the concentration of hydrogen ions increases, making it more acidic.
以前，人们一直以为是大气中二氧化碳为海洋施了肥，因为二氧化碳浓度的增加导致气候变化，使更多营养物质流入海洋。
Previously, it has been held that carbon dioxide in the atmosphere was the cause of the ocean being fertilised, as rising levels brought climatic changes, washing more nutrients into the sea.
二氧化碳的增加部分来源于化石燃料燃烧。据NASA称，过去十年间二氧化碳浓度达到历史最高。
The increase in carbon dioxide has come partly from burning fossil fuels, and has surpassed historic highs in the past decades according to NASA.
很多科学家表示，要避免二氧化碳浓度成倍增长，能源效率必须迅速且有力地增加。
Many scientists say that to avoid a doubling of carbon dioxide concentrations, energy efficiency must be increased drastically, and soon.
增加二氧化碳的浓度在地球的大气层，主要是由化石燃料燃烧造成的，导致全球气候变暖的担忧。
The increasing CO2 concentration in the Earth's atmosphere, mainly caused by fossil fuel combustion, has led to concerns about global warming.
随着溶液中氯化钠浓度的增加，二氧化碳水合物相平衡曲线向低温、高压方向移动。
The increase of NaCl concentration caused the enhancement in the equilibrium pressure as the pore size and the temperature are kept the same.
气候变暖的原因主要是工农业生产中产生二氧化碳、甲烷等温室气体导致大气中这些气体浓度的增加。
The main reason for it is that such glasshouse gases as CO2, CH4 and so on in the atmosphere have become denser than ever because of industrial and agricultural production.
当二氧化碳在海水中溶解，氢离子浓度会增加，使海水变得更酸。
When carbon dioxide dissolves in seawater , the concentration of hydrogen ions increases , …
当二氧化碳在海水中溶解，氢离子浓度会增加，使海水变得更酸。
When carbon dioxide dissolves in seawater , the concentration of hydrogen ions increases , …
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