( and ( ( ( -LRB- ( iii -RRB- ) ) ( ( ( the destruction ) ( of ( ( coral reefs ) ( as ( the ( surrounding waters ) ) ) ) ) ) ( become ( ( ( too warm ) ( for ( the ( coral ( reef organism ) ) ) ) ) ( to ( ( reproduce and ) grow ) ) ) ) ) ) . ) )
(ROOT (FRAG (CC and) (NP (NP (-LRB- -LRB-) (NN iii) (-RRB- -RRB-)) (SBAR (S (NP (NP (DT the) (NN destruction)) (PP (IN of) (NP (NP (NN coral) (NNS reefs)) (PP (IN as) (NP (DT the) (VBG surrounding) (NNS waters)))))) (VP (VBP become) (ADJP (ADJP (RB too) (JJ warm)) (PP (IN for) (NP (DT the) (NN coral) (NN reef) (NN organism))) (S (VP (TO to) (VP (VB reproduce) (CC and) (VB grow)))))))) (. .))))
and (iii) the destruction of coral reefs as the surrounding waters become too warm for the coral reef organism to reproduce and grow.
(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)))))))))) (. .)))