Which of the following is a digestive liquid secreted by the salivary glands?

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

Which of the following is caused by deficiency of iodine?

Pulses contain:

Diseases like malaria, yellow fever, plague, dengue and kala-azar are caused by:

Which of the following cause disease like the common cold, polio, chickenpox and measles?

Which is the position in which we hold our body when we sit, stand or move?

Which of the following help the nervous system by supplying more oxygen to the brain?

Many disease like the common cold, chickenpox, measles, ringworm, whooping cough and scarlet fever spread through:

Which of the following causes disease like malaria and amoebic dysentery?