There are dozens of other possible "feedback mechanisms". Higher temperatures will fuel condensation and increase cloudiness, which may actually damp down global warming. Others, like the "albedo" effect is the amount of solar energy reflected by the earth's surface. As northern ice and snow melts and the darker sea and land pokes through, more heat will be absorbed, adding to the global temperature increase.
Even if we were to magically stop all greenhouse-gas emissions tomorrow the impact on global climate would continue for decades. Delay will simply make the problem worse. The fact is that some of us are doing quite well the way things are. In the developed world prosperity has been built on 150 years of cheap fossil fuels.
Material progress has been linked to energy consumption. Today 75 percent of all the world's energy is consumed by a quarter of the world's population. The average rich-world resident adds about 3.2 tons of CO2 yearly to the atmosphere, more than four times the level added by each Third World citizen. The US, with just seven percent of the global population, is responsible for 22 percent of global warming.
"Feedback mechanisms" in paragraph 1 most probably refer to ______.
A.how plants and animals adapt to hidden factors
B.how plants and animals interact with the changing climate
C.how climate changes
D.how climate zones shift
第1题
急性化脓性中耳炎早期最有效的治疗是
A、抗生素加激素全身应用
B、及早足量抗生素应用
C、抗生素溶液滴耳
D、2%酚甘油滴耳
E、咽鼓管吹张术
第2题
急性化脓性中耳炎早期最有效的治疗是
A.抗生素加激素全身应用
B.及早足量抗生素应用
C.抗生素溶液滴耳
D.2%酚甘油滴耳
E.咽鼓管吹动
第3题
急性化脓性中耳炎早期最有效的处理是
A、抗生素全身应用及滴耳
B、抗生素全身应用
C、抗生素溶液滴耳
D、2%酚甘油滴耳
E、咽鼓管吹张
第7题
如果患者被确诊为右膝关节化脓性关节炎,早期治疗最好的办法是
A.早期全身应用足量有效抗生素和支持疗法
B.早期全身应用足量有效抗生素和关节穿刺抽液及注入抗生素
C.早期全身应用足量有效抗生素和早期关节切开引流
D.早期全身应用足量有效抗生素和石膏固定
E.早期全身应用足量有效抗生素和功能锻炼及理疗
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