Which of these is correct concerning sodium ion regulation?
A. An increase in extracellular sodium causes decreased water reabsorption in the kidneys.
B. Increased water reabsorption causes a decrease in blood volume.
C. Increased blood pressure causes a reduction in ADH secretion.
D. A reduced rate of renin secretion results in an increased rate of aldosterone production.
E. All of these are correct relationships.
Ans: C. Increased blood pressure causes a reduction in ADH secretion.
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Factors such as behavioral, temporal, or ecological isolation mechanisms that prevent two closely related sympatric populations from interbreeding can be grouped together and classified as ________
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