Question: Write a paragraph in about 120 words on ‘Greenhouse Effect’ by answering the questions below.
- What is greenhouse effect?
- What are the causes of the greenhouse effect?
- What will happen if the world’s temperature keeps on rising?
- What is the threat for Bangladesh?
- How can this problem be solved?
Answer: In cold countries, green plants and vegetables are grown in glass houses where sun-rays necessary for trees are trapped. As a result, cold air cannot harm them. But the heat trapped in this system cannot go out of this earth. For this reason, our atmosphere which is guarded by an ozone layer cannot resist the entrance of ultraviolet rays from the sun. This causes the increase of temperature in the atmosphere which has an adverse effect. This is called greenhouse effect. The main effect of the greenhouse is the increase of carbon-di-oxide. With the increase of carbon dioxide, the temperature of the earth is becoming hotter day by day. So, the ice in the polar regions is melting and if this process continues for a long time the level of water in the seas will rise and thereby flood coastal areas and farmlands will go under water. The alarming news about Bangladesh is that for the rise of the sea level, the lower southern part of the country may one day go under water. So, deliberate cutting down of forests must be stopped, tree plantation programme must be made momentous and sources of emitting carbon dioxide and carbon monoxide should be controlled.