Biology
Poison glands of snakes are homologous to

stings of rays
salivary glands of vertebrates
sebaceous glands of mammals
electric organs of fishes

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Biology
Kwashiorkor disease in children is caused by

Sufficient vitamins but deficient fats in diet
Sufficient fats but deficient vitamins in diet
Sufficient carbohydrates and fats but deficient proteins in diet
Sufficient carbohydrates but less fats in diet

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