Biology
Which disease killed more peoples than any other death causing factors including all other diseases,natural calamities and wars?

Malaria
MJeasles
Small Pox
Tetanus

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Biology
The kidneys are stimulated to produce renin

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

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