Cereals, pulses, sweet potatoes, sugar etc are the sources of:

Some disease like typhoid, cholera, dysentery etc are spread by:

Which one of the following keep our body fit, improve appetite and increase the body's ability to fight diseases?

The way of purifying huge quantities of drinking water is called:

Along with their breeding grounds which of the following is the best solution for protection from harmful diseases of mosquitoes?

How are the diseases like malaria, yellow fever, plague, dengue and kala-azar caused?

Deficiency of vitamin C results in:

Iodised salt helps to prevent:

What is the process of heating milk at high temperatures and quickly cooling it to kill harmful germs called?

What is the disease caused by a protozoa which is carried by the female Anopheles mosquito?