( ( ( The ( sharp spines ) ) ( that ( you ( see ( on ( ( cactus and ) ( some ( other ( plants help ) ) ) ) ) ) ) ) ) ( ( ( ( ( shade ( the plant ) ) ( from ( the sun ) ) ) , ) ( keeping ( it cool ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ sharp) (NNS spines)) (SBAR (IN that) (S (NP (PRP you)) (VP (VBP see) (PP (IN on) (NP (NP (NN cactus)) (CC and) (NP (DT some) (JJ other) (NNS plants) (NN help)))))))) (VP (VBD shade) (NP (DT the) (NN plant)) (PP (IN from) (NP (DT the) (NN sun))) (, ,) (S (VP (VBG keeping) (S (NP (PRP it)) (ADJP (JJ cool)))))) (. .)))
The sharp spines that you see on cactus and some other plants help shade the plant from the sun, keeping it 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)))))))))) (. .)))