To lower blood acidity,
a) hydrogen ions are excreted and bicarbonate ions are reabsorbed
b) hydrogen ions are reabsorbed and bicarbonate ions are excreted
c) hydrogen ions and bicarbonate ions are reabsorbed
d) hydrogen ions and bicarbonate ions are excreted
e) urea, uric acid, and ammonia are excreted
Answer: a) hydrogen ions are excreted and bicarbonate ions are reabsorbed
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