( ( ( ( ( ( ( The ( silver spines ) ) ( on ( cholla ( cactus help ) ) ) ) ( reflect ( sunlight ( ( away ( from ( the cactus ) ) ) ( ( s trunk ) ( so ( predators ( ( will not ) ( see ( the trunk ) ) ) ) ) ) ) ) ) ) , ) and ) ( they ( also ( keep ( ( the cholla ) cool ) ) ) ) ) . )
(ROOT (S (S (NP (NP (DT The) (JJ silver) (NNS spines)) (PP (IN on) (NP (NN cholla) (NN cactus) (NN help)))) (VP (VBP reflect) (SBAR (S (NP (NN sunlight)) (ADVP (RB away) (PP (IN from) (NP (DT the) (NN cactus)))) (VP (VBZ s) (ADJP (JJ trunk)) (SBAR (IN so) (S (NP (NNS predators)) (VP (MD will) (RB not) (VP (VB see) (NP (DT the) (NN trunk))))))))))) (, ,) (CC and) (S (NP (PRP they)) (ADVP (RB also)) (VP (VB keep) (S (NP (DT the) (NN cholla)) (ADJP (JJ cool))))) (. .)))
The silver spines on cholla cactus help reflect sunlight away from the cactus s trunk so predators will not see the trunk, and they also keep the cholla cool.
(ROOT (S (NP (NP (DT The) (NNS spines)) (PP (IN of) (NP (DT a) (NN cactus)))) (VP (VBP help) (SBAR (S (NP (PRP it)) (VP (VBP survive) (SBAR (IN because) (S (NP (NNS spines)) (VP (VB protect) (NP (DT the) (NN cactus)) (PP (IN from) (NP (NNS animals)))))))))) (. .)))