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प्रश्न
How do biological disasters occur?
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उत्तर
Biological disasters are caused by germs developed in laboratories and released in the air to kill a large number of people. When these microbes are inhaled by a person or get absorbed in his/her system through a cut or wound, they can infect him/her. Even a few drops of the smallpox or plague virus could start an epidemic, killing thousands of people.
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संबंधित प्रश्न
Fill in the blanks
The ______ of the earth’s plates caused the earthquake in Nepal in April 2015.
How are earthquakes caused?
What is a drought?
Identify the type of disaster as shown in the picture.
Name the world’s worst industrial disaster.
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______ are incidents that cause significant damage or destruction to life and property.
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About ______ per cent of the land area in India is drought-prone.
Fill in the blanks
________ nuclear disasters mostly occur due to accidents in nuclear power reactors.
Fill in the blanks
______ is the most flood-prone region amongst the great northern plains of India with almost ______ per cent of the state affected by floods.
Match the following:
| Column A | Column B |
| 1. Earthquake | a. Dykes and embankments |
| 2. Floods | b. Extinguisher |
| 3. Droughts | c. Drop, cover, hold |
| 4. Fire | d. Rainwater harvesting |
