But some people believe change is coming so fast that the northern seas will open up much earlier than expected.
但是一些人认为,变化将是如此地快以至于北极海将比预计的更早地开化。
Climate change has already had documented effects on species living across the globe, from polar bears in the Arctic to coral reefs in the tropical seas.
从北冰洋的极地熊到热带海域的珊瑚礁,气候变化已经被证明对全球范围内的生物都产生了影响。
National and statemarine reserves can help protect against overharvest of ocean resources, butthey're just as vulnerable as the rest of the seas in the face of globalclimate change.
国家级和州级的海洋保护区能够保护海洋资源不被过度捕捞,但它们(指保护区)在面对全球气候变化时只不过和其它的海域一样脆弱。
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