Biology
Pellagra and Scurvy are caused by which pair of vitamin deficiency respectively ________

VitaminB-12 and VitaminC
VitaminC and VitaminA
VitaminC and VitaminD
Vitamin A and VitaminB-12

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Biology
The kidneys are stimulated to produce renin

When the specific gravity of urine rises above 1.10
When the peritubular capillaries are dilated
When the pH of the urine decreases
By a decrease in the blood pressure

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