Answer: Natural hajards/calamities pose a great threat to the ecological balance of a country. Natural calamities such as floods, cyclones, earthquakes and erosion etc. are very dangerous by nature. Bangladesh is called a land of natural calamities. It is becoming more and more harmful these days. Nowadays it can be very ruinous (¶wZMÖ¯@) to make millions of people its victims in a second. Fires, droughts, earthquakes, violent storm, flood, river erosion are the most common natural calamities. Every year cyclone destroys our lives and properties, floods take away all things to the river and sea, earthquakes destroy our lives and homes. Cold winter, mist storm impede (e¨vnZ Kiv ev evav †`Iqv) our normal works of everyday life and sometimes destroy man. This is not all, nature is also losing its balance for ever increasing heat created from carbon dioxide. So, greenhouse effect is swelling (ùxZ Kiv) the normal level of sea water. After any natural disaster, people who become shelterless have to depend on the relief and charity of other people. Actually, we become miserable in any calamities. We cannot resist (†iva Kiv) them. We can only take some steps to lessen the misery of the victims. We can create consciousness among people and train them how to protect them from the grim and grave natural hazards.
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