The third hypothesis states that gradual changes of climate may be to blame.
第三个假说是气候的缓慢变化导致了黄杉数量的减少。
In general changes of climate occur when the energy balance of the earth is disturbed.
总的来说，当地球上的能量平衡被打破时，气候就发生变化了。
The satellites are able to observe the changes of climate on earth by means of remote sensors.
人造卫星能够利用遥感观测地球上的气候变化。
Such new places will depend on slow changes of climate, or on the occasional immigration of new inhabitants.
这些新的位置，要靠气候的徐徐变化或新生物的偶然迁入而定。
Reconstructing the climate changes of the past is extremely difficult, because systematic weather observations began only a few centuries ago, in Europe and North America.
重建过去的气候变化是极其困难的，因为在欧洲和北美，几个世纪前才开始系统的天气观测。
Bond hypothesized that the alternating cycles might be evidence of changes in ocean-water circulation and therefore in Earth's climate.
邦德推测，这种交替循环可能是海-水间循环变化的证据，因此也会影响地球的气候。
Information on temperature, rainfall, and other aspects of the climate that can be inferred from the systematic changes in properties is usually referred to as proxy data.
关于温度、降雨量和气候的其他方面的信息可以从性质的系统变化中推断出来，这些信息通常被称为代理数据。
Changes in climate before that period caused severe fluctuation in sea level, resulting in the extinction of the dinosaurs.
在此之前，气候的变化导致了海平面的剧烈波动，恐龙因此灭绝。
Changes in climate before the Cretaceous period caused severe fluctuation in sea level, resulting in the extinction of the dinosaurs.
白垩纪以前的气候变化导致了海平面的剧烈波动，引发了恐龙的灭绝。
Climate change will fuel the growth of phytoplankton in some areas, while reducing it in other spots, leading to changes in the ocean's appearance.
气候变化将加速某些地区浮游植物的生长，同时减少其他地区的浮游植物，导致海洋的外观发生变化。
What this study suggests is that the speed of climate shifts and the magnitude of the changes required to adapt could be much greater.
这项研究表明，气候变化的速度和适应气候变化所需的改变幅度可能要大得多。
In fact, the pattern of climate change in the past reveals that Earth's climate will almost certainly go through dramatic changes in the future even without the influence of human activity.
事实上，过去的气候变化模式表明，即使没有人类活动的影响，地球的气候几乎肯定会在未来经历剧烈的变化。
NASA used the term "climate change" because it more accurately reflects the wide range of changes to the planet caused by increasing amounts of greenhouse gases in the atmosphere.
美国国家航空航天局之所以使用“气候变化”这个词，是因为这个词更准确地反映出由于大气中温室气体总量增多而对地球造成的大范围变化。
With the changes in the world's climate, dinosaurs died, but many smaller animals lived on. It was the survival of the fittest.
随着世界气候的变迁，恐龙绝迹了，但许多较小的动物却继续活了下来。这就是适者生存。
Other positive climate feedbacks that operate in the Arctic include the thawing of permafrost and vegetation changes.
在北极发生的其它气候正反馈还包括永久冻土融化和植被变化。
Changes in climate may lead to flooding of the coastal areas.
气候的变化会导致该地沿海地区的洪水泛滥。
Changes in food needs, living standards, climate and other factors call for new avenues of research, according to the report.
根据该报告，粮食需求、生活水平、气候和其它因素的变化呼唤人类探索新的研究途径。
An inflatable lift bag brings a stalagmite to the surface to be studied for evidence of abrupt climate changes in the past.
他用一个可充气的包来运送石笋，对这些石笋的研究可以了解过去的气候是如何剧烈变化的。
And there might be drastic changes in the climate of some regions as ocean currents shift.
随着洋流的变动，一些地区的气候将会产生急剧的变化。
Longer term changes in climate affect the viability and health of ecosystems, influencing shifts in the distribution of plants, pathogens, animals, and even human settlements.
较长期的气候变化可影响生态系统的生存能力和健康，使植物、病原体、动物、甚至人类住区的分布状况发生变化。
In the water sector, water managers inherently have to deal with variability and uncertainty, but what's new is the increased level of uncertainty due to the changes in climate.
在水行业内部，水资源管理者本来就必须要应对水资源的变化和不稳定问题，但他们面临的新问题是气候变化导致的不稳定性增加问题。
But climate change has another effect: It changes patterns of global air circulation.
但是气候变化还有另外一个影响，即它可以改变空气循环的模式。
The hard truth is that we will have to adapt to any changes in the world's climate - regardless of the causes of those changes.
我们不愿承认的事实是，我们只能接受世界气候的任何变化，不管造成这些变化的原因是什么。
But, this shows you that when climate changes do occur in one part of the world, the whole world will be at risk of climate change because of our globalized society.
但是，这告诉我们，当气候变化影响到世界的某一个地方，由于社会的全球化，整个世界都会受到影响。
The flower is perhaps the best symbol of the effects of climate change in the region as its colour changes according to temperature and exposure.
这种花也许是气候变化对该地区影响的最佳象征，它的颜色会随着温度及光照的变化而变化。
This will allow the tracking of changes in the distribution of species in response to, for instance, climate change.
通过这一项目可能可以了解气候变化对物种分布情况的影响。
For this reason and because of the apparent lack of recent oceans and life on Mars, it should be simpler to determine the causes and history of climate changes on Mars.
基于这个原因，另外因为火星上明显没有海洋和生命，要确定火星上气候变化的原因和历史应该不难。
For this reason and because of the apparent lack of recent oceans and life on Mars, it should be simpler to determine the causes and history of climate changes on Mars.
基于这个原因，另外因为火星上明显没有海洋和生命，要确定火星上气候变化的原因和历史应该不难。
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