How does breathing into a paper bag help return blood pH to normal?

Question

How does breathing into a paper bag help return blood pH to normal?

Match the words in the left column to the appropriate blanks in the sentence on the right.
decrease
Increase
Breathing into a paper bag will (blank) the CO2 concentration in the blood, (blank) the [H2CO3] (blank)
H30+], and (blank) the blood pH back toward the normal range.

Answer 1

Breathing into a paper bag will (increase) the CO2 concentration in the blood, (increase) the [H2CO3], and (decrease) the blood pH back toward the normal range.

Answer 2

Breathing into a paper bag will (increase) the CO2 concentration in the blood, (decrease) the [H2CO3], (increase) the H30+] and (return) the blood pH back toward the normal range.

Answer 3

Breathing into a paper bag will (Increase) the CO2 concentration in the blood, (Increase) the [H2CO3] (decrease) [H30+], and (lower) the blood pH back toward the normal range.