Answer:

1.Beriberi is a disease caused by a vitamin B-1 deficiency, also known as thiamine deficiency. There are two types of the disease: wet beriberi and dry beriberi. Wet beriberi affects the heart and circulatory system. In extreme cases, wet beriberi can cause heart failure.

2.Iron is an essential element for blood production. About 70 percent of your body's iron is found in the red blood cells of your blood called hemoglobin and in muscle cells called myoglobin.

3.Citrus crop is grown in developed and developing countries as well. Citrus fruits constitute a crucial source of vitamin C. ... Oranges occupy the major portion of world citrus production followed by mandarins. Oranges form the majority of the citrus crop produced in the United States.

4.Platelets (thrombocytes). These help in blood clotting.

5.In rare cases in the United States or in other parts of the world where nutritional diets may vary, vitamin A deficiency can also lead to night blindness. Vitamin A, also called retinol, plays a role in transforming nerve impulses into images in the retina. The retina is a light-sensitive area in the back of