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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
How do chemical disasters occur?
What are the causes of this kind of disaster?
What is an earthquake?
What causes fire? Give one example.
What are biological disasters?
What are the effects of spills?
Name two state of India where floods cause massive damages every year.
Fill in the blanks
________ nuclear disasters mostly occur due to accidents in nuclear power reactors.
Fill in the blanks
______ explosion is the largest oil spill in the history of petroleum industry.
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 |
