( ( ( ( ( Your ( cardiovascular system ) ) ( becomes ( more efficient ) ) ) and ) ( ( your body ) ( ( develops ( more capillaries ) ) ( to ( better ( transport oxygen ) ) ) ) ) ) . )
(ROOT (S (S (NP (PRP$ Your) (JJ cardiovascular) (NN system)) (VP (VBZ becomes) (ADJP (RBR more) (JJ efficient)))) (CC and) (S (NP (PRP$ your) (NN body)) (VP (VBZ develops) (NP (JJR more) (NNS capillaries)) (PP (TO to) (NP (JJR better) (NN transport) (NN oxygen))))) (. .)))
Your cardiovascular system becomes more efficient and your body develops more capillaries to better transport oxygen.
(ROOT (S (NP (DT The) (JJ cardiovascular) (NN system)) (VP (VBZ transports) (NP (JJ many) (NNS substances)) (PP (TO to) (CC and) (IN from) (NP (NP (NNS cells)) (PP (IN throughout) (NP (DT the) (NN body)))))) (. .)))