Biology
Study of the effects of toxic chemical substance on animal and plant is

Limnology
None of these
Microbiology
Toxicology

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Biology
Kwashiorkor disease in children is caused by

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

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