Biology
In plants and mineral salts from soil to the aerial parts of the plant are conducted through

Xylem vessels
All of these
Vascular bundle
Phloem vessels

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Biology
The kidneys are stimulated to produce renin

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

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