amount of the world's oxygen.Rainforests have their own perfect system for ensuring their own survival.The tall trees make a canopy(树冠层)of branches and leaves which protect themselves,smaller plants,and the forest animals from heavy rain,intense dry heat from the sun and strong...
Today, though, times are changing. Worldwide about 440 plants now generate 16 percent of the planet's electric power, and some countries have invested heavily in nuclear energy. France, for instance, gets 78 percent of its electricity from nuclear power. China has started to...
Public Bus: From theDongzhimensubway station, walk to street level to theDongzhimen long-distance bus station(head East on Dongzhimen Waida Street and then take a left—Northbound— on Dongzhimen Outer Byway). At the station, you’ll have some options. L. Planet says to takeBus #916, then ...
The landscape of American finance has been radically changed. The independent investment bank -- a crucial Wall Street animal that relied on high leverage(杠杆作用) and wholesale funding -- is now all but disappear. Lehman Brothers has gone bust; Bear Steams and Merrill Lynch have been swallowe...
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With 1.37 billion people (17.4 percent of the world's population [21]) and an economy dependent on rain-fed agriculture, Africa, the second-largest continent on Earth, has the fastest population growth and is also among the regions most vulnerable to climate variability and change due to its...
With 1.37 billion people (17.4 percent of the world’s population [21]) and an economy dependent on rain-fed agriculture, Africa, the second-largest continent on Earth, has the fastest population growth and is also among the regions most vulnerable to climate variability and change due to its...