读写填空 #28Coral Reefs
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Coral reefs more marine life than any other ocean ecosystem and are, not , a favorite pursuit for many divers. But as well as being physically and biologically spectacular, coral reefs also sustain the livelihoods of over half a billion people. What is more, this number is expected to in coming decades while the area of high - quality reef is expected to halve. In combination with the very real threat of climate change, which could lead to increased seawater temperatures and ocean acidification , we start to arrive at some quite frightening scenarios.
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题号#28