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| Mode of transmission | Diseases transmitted |
|---|---|
| Through air | common cold, chicken pox, measles, tuberculosis |
| Through food and water | rat fever,typhoid, cholera, jaundice, |
| Through mosquito | filariasis,malaria,dengue fever, chikungunya |
| Through Housefly | cholera , diarrhoea |
| Through contact | conjunctivitis,leprosy |
Laika was a Soviet space dog who became one of the first animals in space, and the first animal to orbit the Earth.
Carbon dioxide is used to Remove fire and Oxygen help in burning.
| Agricultural crops | Place of origin |
|---|---|
| Tomato,Potato,Green chilly | America |
| Tea | China |
| Cabbage | Europe |
| Rubber,Cashew tree | Brazil |
| Agricultural crops | Place of origin |
|---|---|
| Pineapple,Tomato,Potato | America |
| Tea | China |
| Cabbage | Europe |
| Rubber,Cashew tree | Brazil |
Extensive exposure to silicon may cause Silicosis. Silicosis is a lung disease. It usually happens in jobs where you breathe in dust that contains silica.
Control rods are used in nuclear reactors to control the fission rate of uranium and/or plutonium. Their compositions includes chemical elements such as boron, cadmium, silver, and/or indium, that are capable of absorbing many neutrons without themselves fissioning.