Correct Answer - Option 4 : oil cuts off oxygen supply, thereby stops the breeding of mosquitoes
The correct answer is oil cuts off oxygen supply, thereby stops the breeding of mosquitoes
Concept:
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Illness/Diseases: It is a state of experience by the body when one or more of the control systems of the body are not functioning normally.
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Communicable disease: The diseases which are infectious or transmissible from a body to body through biological agents in humans and animals. Ex- Influenza, Ebola, Covid-19, etc.
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Non-communicable disease: The disease that is not transmissible directly from one person to another through biological agents, Ex- Astana, Diabetes, etc.
Explanation:
Stagnant water:
- When the flow of the water stops and that water is there only for some period of time is called stagnant water.
- Stagnant water is the main source for many types of diseases too.
- The rainwater collected in the open tyres and also in the tank and if not looking for a long time may become a house for many types of diseases.
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Malaria may be caused by stagnant water.
- Water pollution can often lead to increased breeding of mosquitoes that carry parasites.
- The growth or breeding of the mosquitoes can be stopped by spraying the kerosene on the water.
- This happens because when we spray the kerosene then the oxygen supply to the larva (small mosquitoes) stops and they die in the water.
- Spreading oil over water cuts the oxygen supply, hence mosquitoes cannot breed in them.
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Polio is caused by a virus known as poliovirus and it can cause paralysis.
- Pneumonia is a lung disease that happens because of bacterial or viral infections.
- Chicken Pox is caused by the varicella-zoster virus. The disease is also known as Varicella.
So Malaria is a disease that may be caused due to stagnant water.
Some common communicable diseases are:
| Name of Disease |
Mode of Spread |
| Cholera |
Food and water |
| Typhoid |
Food and water |
| Hepatitis (Jaundice) |
Food and water |
| Influenza (Flu) |
Air to air |
| Tuberculosis (T.B) |
Air to air |
| Malaria |
Mosquito |
| Tetanus |
Bite or wound exposed to dust or Iron |
| Polio |
Food and water |
| Swine Flu |
Air to Air |
