Biology
Which of the following is not true of colour blindness?

A colour blind person cannot see any colours
For some people, it might be difficult to recognize colours of traffic lights and signs
Red-green colour blindness is the most common type of colour blindness
Colour blind people learn to rely on shapes, patterns, and positions of signs and signals

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Biology
Kwashiorkor disease in children is caused by

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

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