2. 职称英语
  3. Global warming refers to the average temperature of the atmosphere, oceans, and

Global warming refers to the average temperature of the atmosphere, oceans, and

游客2024-06-17  42
问题 Global warming refers to the average temperature of the atmosphere, oceans, and landmasses of Earth. [br] Today atmospheric carbon dioxide concentrations are 31 percent more than that of______.
选项
答案 1750
解析 参见第3个小标题TYPES OF GREENHOUSE GASES下面第4段第3、4句：In 1750 there were about 281 molecules of carbon dioxide per million molecules of air．Today atmospheric carbon dioxide concentrations are 368 ppm，which reflects a 31 percent increase．
转载请注明原文地址:http://tihaiku.com/zcyy/3638608.html
相关试题推荐
随机试题
最新回复(0)