“海洋生态系统是由多种资源孕育而非单一依靠冰川，”胡德说，“例如，洋面上升是一种自然循环现象，富含养分的冷水从海底升起，滋养了海面的生物。 但是，由于冰川的融化而导致大量淡水突如其来涌入海洋，这可能会破坏洋流的正常循环。”

But a sudden influx of fresh water from melting ice could also disrupt the ocean currents that drive upwelling.

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达尔文想：“这么说这些树原来长在海边，海水上涨淹没了它们，后来海底上升了……。”

“So those trees once stood by the sea,” thought Darwin. “The sea came up and covered them.

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然后若比看见海底像小山一样上升。

Then Jobic saw that the bottom of the sea was beginning to go up like a hill.

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