The climate throughout the world is changing. It has already disturbed weather patterns by increasing rainfall in some areas and decreasing it in others. The temperature is increasing day by day. It results as frequent hurricanes, tornadoes, floods, tsunamis, etc.
Write an article in about 100-120 words for your school magazine on the topic 'Global Warming : A Threat to the Life' .
(Hints : Global warming; Rise in avg. temperature, Melting of glaciers, Due to pollution & human activities)
plz answer
Answers
Answer:
Leaf surface
Leaf surface absorbs maximum dust particles because of its large surface area. This is followed by trunk (stem) of the tree. - Dust plays important role in polluting air.
Answer:
Global warming is a phenomenon where the earth’s average temperature rises due to increased amounts of greenhouse gases. Greenhouse gases such as carbon dioxide, methane and ozone trap the incoming radiation from the sun. This effect creates a natural “blanket” which prevents the heat from escaping back into the atmosphere. This effect is called a greenhouse effect.
In fact, the greenhouse effect is quite important for life on earth. Without this effect, the sun’s radiation would be reflected back into the atmosphere, freezing the surface and making life impossible. However, when greenhouse gasses in excess amounts get trapped, serious repercussions begin to appear. The polar ice caps begin to melt, leading to the rise in sea levels. Furthermore, the greenhouse effect is accelerated when polar ice caps and sea ice melts. This is due to the fact the ice reflects 50% to 70% of the sun’s rays back into space; but without ice, the solar radiation gets absorbed. Seawater reflects only 6% of the sun’s radiation back into space.