( ( ( Warmer and ) ( ( more ( acidic water ) ) ( around ( the ( coral reef ) ) ) ) ) ( ( will ( ( slow down ) ( ( calcification , ) ( which ( is ( how ( ( the coral ) ( ( ( grows and ) becomes ) strong ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Warmer)) (CC and) (NP (NP (JJR more) (JJ acidic) (NN water)) (PP (IN around) (NP (DT the) (NN coral) (NN reef))))) (VP (MD will) (VP (VB slow) (PRT (RP down)) (NP (NP (NN calcification)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (SBAR (WHADVP (WRB how)) (S (NP (DT the) (NN coral)) (VP (VBZ grows) (CC and) (VBZ becomes) (S (ADJP (JJ strong)))))))))))) (. .)))
Warmer and more acidic water around the coral reef will slow down calcification, which is how the coral grows and becomes strong.
(ROOT (S (NP (NNS Corals)) (VP (VBP build) (NP (NP (JJ hard) (NNS exoskeletons)) (SBAR (WHNP (WDT that)) (S (VP (VBP grow) (S (VP (TO to) (VP (VB become) (NP (NN coral) (NNS reefs)))))))))) (. .)))