( ( As ( ( the ( blood pH ) ) decreases ) ) ( ( -LRB- ( ( becomes ( more acidic ) ) -RRB- ) ) ( there ( ( is ( ( a ( corresponding increase ) ) ( in ventilation ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN As) (S (NP (DT the) (NN blood) (NN pH)) (VP (VBZ decreases)))) (PRN (-LRB- -LRB-) (S (VP (VBZ becomes) (ADJP (RBR more) (JJ acidic)))) (-RRB- -RRB-)) (NP (EX there)) (VP (VBZ is) (NP (NP (DT a) (JJ corresponding) (NN increase)) (PP (IN in) (NP (NN ventilation))))) (. .)))
As the blood pH decreases (becomes more acidic) there is a corresponding increase in ventilation.
(ROOT (S (PP (IN As) (NP (NN ph) (NNS increases))) (, ,) (NP (DT a) (NN solution)) (VP (VBZ becomes) (ADJP (RBR more) (JJ basic))) (. .)))