Which of the following are the harmful effect of global warming? I. The temperature of the earth has increased by $0.6℃$ is last three decades, which will lead to change in precipitation patterns II. This rise in temperature will lead to the increased melting of polar ice caps which will cause the rice in sea level and many coastal areas will be submerged III. Increased temperature will lead to increased weed growth, eruption of diseases and pests. Thus, crop productivity will decrease

Question

Dr. Abubacker · Accepted Answer

The phenomenon of greenhouse effect has resulted in rise of mean atmospheric temperature by $0.6℃$ in the 20th century. It may further rise to some where between $14℃$ to $58℃$ by the year 2100 from the 1990 level. Warming of atmosphere will considerably increase its moisture carrying capacity Since warming of the troposphere, is accompanied by cooling of the stratosphere, patterns of air mass movements will change leading to widespread changes in precipitation patterns, particularly in the regions of middle and higher latitudes (i) The global warming will raise the sea level due to the thermal expansion of sea water and melting of glaciers and green land ice sheets (ii) Global warming will lead to explosive growth of weeds, increased incidence of plant diseases and pest as well as increased basal rate of respiration in plants

Explanation

Reviewed by Dr. Abubacker

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