Why are we advised to eat unpolished rice (brown rice) rather than polished rice?

Write the name of the disease caused by the deficiency of the following mineral.

Calcium

Write the name of the disease caused by the deficiency of the following mineral.

Sodium

Write the name of the disease caused by the deficiency of the following mineral.

Iron

Write the name of the disease caused by the deficiency of the following mineral.

Fluorine

Write the name of the disease caused by the deficiency of the following mineral.

Iodine

Give example of the following.

Vector-borne communicable disease

Give example of the following.

Air-borne communicable disease

Give example of the following.

Water-borne communicable disease.