B.The Arctic Ocean’s situation suggests global warming is quickening sharply.
C.Regime shifts occur only in several regions of the Arctic Ocean.
D.New coastline ecosystems in the Arctic Ocean could be less productive than before.
5.What’s the best title for the passage?
A.Arctic Coastlines Being in Face of Danger Now
B.Serious Atmospheric Problems in Arctic Coastlines
C.Ways to Improve Arctic Coastline Environment
D.Arctic Coastlines Hitting Ecological Tipping Point
B
A study in China’s Qin Mountains,which is home to around 270 pandas—about a fifth of the world’s wild population—predicts that the amount of bamboo will decline(减少) this century as the global warming continues.
“The pandas may face a shortage of food unless they can find alternative food resources,”a team of researchers from the U.S.and China warn in the journal Nature Climate Change.
The international symbol of environmental conservation efforts,the giant panda is a picky eater.99% of its diet consists of bamboo.It eats up to 38 kilograms per day.This means the black-and-white bear’s survival is closely linked to a thriving(繁荣的) bamboo habitat.
Bamboo itself also has a slow reproductive rate,flowering only every 30 to 35 years,which means it would be slow to adapt to a change in a local climate,according to the researchers.
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