What is needed as a source of energy for vital activities of the body?
A. Iron
B. Calcium
C. Water
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A. Iron
B. Calcium
C. Water
A. plasma
B. platelets
D. white blood cells
B. Calcium
C. Water
D.Carbohydrates
A. Eggs and meat
C. Fresh vegetables and fruits
D. Seeds
A. Ectoderm
B. Mesoderm
C. Epidermis
B. Less the rate of respiration
C. Rate of respiration has nothing to do with size of animal
D. None of these