Question

besides oxygen exchange, the respiratory system also functions to eliminate (click to select). too much of this gas can cause a(n) (click to select) in blood ph, compromising homeostasis.

Explanation:

The respiratory system's main functions include gas exchange. It takes in oxygen and expels carbon dioxide (\(CO_2\)). Carbon dioxide can react with water in the blood (\(CO_2 + H_2O
ightleftharpoons H_2CO_3
ightleftharpoons H^+ + HCO_3^-\)). When there is too much \(CO_2\), more \(H^+\) is produced, which lowers the blood pH (makes it more acidic). Acidosis is a condition where the blood pH is lower than the normal range (below 7.35).

Answer:

First blank: carbon dioxide (\(CO_2\)); Second blank: decrease (or acidosis related to pH decrease).