Earthquake is one of the most common natural calamities on earth. It is an abrupt and violent tremor of the earth's surface. It occurs for various reasons. It is mainly caused by deep crack in the earth or by volcanic eruption . When the nearby volcanoes emit lava, there occurs severe shaking causing an earthquake. Moreover, if there is any fault line in a geographical area, there has a great chance of occurring earthquakes in that area. In some cases, earthquake occurs because some gases try to come out from the depth of the earth. Bangladesh lies in the active earthquake zone. Here earthquake occurs very frequently. But our people are not widely aware of the gravity of its loss. Because of the frequent occurrence of ea quake in our country experts are giving more attention to it in recent times. If any major earthquake occurs in Bangladesh, most of the buildings in most of the cities will be destroyed as they are not built in accordance with an earthquake resistant standard. A group of experts opine ( Sae a a that the recurrence of quakes in recent years should be taken as a signal for a major earthquake. Another group of experts believe that the concern should not be amplified because although there are a number of fault lines in the geographical area comprising Bangladesh, none of them is active enough to pose a major threat. Yet none of the groups of experts rules out the possibility of a major, quake and the dangers that might be associated with it. So, in order to protect us from such an impending danger , we must be conscious about the causes and results of earthquake. We should not build houses without the advice of experts so that they can survive in the event of an earthquake. Above all, the government should develop earthquake resistant building code that all buildings should follow as mandatory (বাধ্যতামূলক). Thus the losses caused by earthquake can be reduced to some extent (কিছু পরিমাণে).
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