What is needed as a source of energy for vital activities of the body?

A. Iron

B. Calcium

C. Water

D. Carbohydrates

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Hemoglobin (Hb) is a protein that is found in the _____ of the blood.

A. plasma

B. platelets

C. red blood cells

D. white blood cells

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What is essential for the formation of hemoglobin?

A. Iron

B. Calcium

C. Water

D.Carbohydrates

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What is considered as good sources of iodine?

A. Eggs and meat

B. Sea foods

C. Fresh vegetables and fruits

D. Seeds

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