A.climate change | B.sea ice’s disappearance |
C.seawater’s expansion | D.the loss of the Arctic’s ice cover |
A.The scientists have been observing the Arctic Ocean for many years. |
B.The scientists have compared the computer programs with observation made by satellites and other instruments. |
C.The scientists have figured out many numbers with the help of computer. |
D.The scientists have found that the seawater take in sunlight and increase temperatures. |
A.22.5% | B.35% | C.72% | D.100% |
A.The figures of the computer estimates are wrong. |
B.Scientists study climate change through studying sea level. |
C.Newer studies show gases may have more effect on sea ice in the Arctic Ocean. |
D.The ice is melting even faster than satellites have estimated. |
A.prevent the sea ice in the Arctic Ocean from melting any more |
B.pay more attention to the loss of the Arctic’s ice cover |
C.take necessary steps to protect the environment of our earth |
D.stop summer sea ice in the Arctic from disappearing so fast |
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