Understanding that process could help scientists create more advanced computer models of global environmental changes.

通过了解这一过程，科学家就能够制造出更为先进计算机模型，并因此来检测气候变化。

By the end of the Cretaceous period, global environmental changes saw the emergence of tougher, more fibrous species of plants.

到了白垩纪末期，全球的环境变化带来了更坚韧、纤维更多的植物物种。

I think these dinosaurs went extinct because they simply could not deal with the global environmental changes that were occurring at the end of the Cretaceous period.

我想这些恐龙的灭绝是因为它们无法适应在白垩纪末期出现的全球性的环境变化。

We're now building a clock at the Anchorage Museum that reflects the total flow of several major Alaskan rivers, which are sensitive to local and global environmental changes.

我们现在正在安克雷奇博物馆建造一个反映阿拉斯加几条主要河流总流量的时钟，这些河流对当地和全球环境变化非常敏感。