Biology
There is no bacteria activity in which of the following process?

Preparation of sillage
Sewage disposal
Tanning of leather
Ripening of cheese

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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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