Is the ozone layer good or bad? Why is the largest ozone hole over Antarctica? What results from stratospheric ozone depletion? Why does acetylene not contribute to ground-level ozone formation? How do we measure the ozone layer? How does the ozone layer change over time?
15.Hemrietta:The biggest problem with the environment is the ozone layer, there's a hole.and it's getting bigger.It's made by cars and aeroplanes-things give off fumes.There should be law that you aren't allowed to go to school by cars because the fum
The ozone layer protects all life on Earth from the sun’s harmful radiation. But by the 1980s, the widespread use of damaging chemicals caused a dramatic hole to open over Antarctica each year, driven by complex meteorological and chemical processes. Thanks to the Montreal Protocol, the ozone...
根据第三段中的Scientists firstbecame concerned about the ozone layer in the mid-1980swhen a hole was discovered in the layer above Antarcticaduring the winter.可知,科学家们在20世纪80年代就发现了南极洲上空的臭氧层空洞,因而可知观察臭氧层的历史已经超过20年了,故选C。]9.D[提示:细节理解题。根据...
60. The ozone layer in the atmosphere can___. A. do a lot of good to human beingsin many ways. B. protect humans from diseasescaused by bad weather. C. do a lot of harm to human beingsin the summer-time. D. protect humans from harmful levelsof ultraviolet radiation. 61. Scientists...
The roads were narrow and there weren't many ring roads. Big families were crowded into small houses. Many families couldn't get enough food. Few children had the chance to receive a good education. People had little money to see a doctor. A...
【题目】Damage to Ozone Layer Gets WorseIn the middle of winter, when snow is fallingin many parts of the United States, scientistshave sounded a warning to people who plan tospend many hours in the sun this summer.T he warning: T he sun's summertime rays are more dangerous than once ...
【题目】Damage to Ozone layer Gets Worse In the middle of winter, when snow is fal ling in many parts of the United States, scien tists have sounded a warning to people who pl an to spend many hours in the sun this sum mer. T he warning is: T he sun's summertime rays are more...
Courtesy: the world! The good news comes as researchers see that the ozone layer over Antarctica has recuperated to the point that few environmental changes in the Earth’s southern half of the globe have stopped. Before the beginning of the century, the changes were sufficient to cause ...
A BLAST OF SOUND IS GOOD-NEWS FOR THE OZONE-LAYERReports on Japanese chemists' development of a technique to safely destroy ozone-depleting chlorofluorocarbons (CFC) by blasting them with sound waves in water. Technique as an alternative to costly methods which require high temperatures; Problems ...