( ( ( The ( human ( body 's ) ) ) ( ability ( to ( adapt ( to ( different ( environmental stresses ) ) ) ) ) ) ) ( ( ( ( ( ( is remarkable ) , ) ( ( allowing humans ) ( to ( acclimatize ( to ( ( a ( wide variety ) ) ( of ( ( ( temperatures , ) humidity ) , ) ) ) ) ) ) ) ) and ) altitudes ) . ) )
(ROOT (S (NP (NP (DT The) (JJ human) (NN body) (POS 's)) (NN ability) (S (VP (TO to) (VP (VB adapt) (PP (TO to) (NP (JJ different) (JJ environmental) (NNS stresses))))))) (VP (VP (VBZ is) (ADJP (JJ remarkable)) (, ,) (S (VP (VBG allowing) (NP (NNS humans)) (S (VP (TO to) (VP (VB acclimatize) (PP (TO to) (NP (NP (DT a) (JJ wide) (NN variety)) (PP (IN of) (NP (NP (NNS temperatures)) (, ,) (NP (NN humidity)) (, ,))))))))))) (CC and) (VP (VBZ altitudes))) (. .)))
The human body's ability to adapt to different environmental stresses is remarkable, allowing humans to acclimatize to a wide variety of temperatures, humidity, and altitudes.
(ROOT (S (NP (NNS Ectotherms)) (VP (VBP undergo) (S (NP (NP (DT a) (NN variety)) (PP (IN of) (NP (NP (NNS changes)) (PP (IN at) (NP (DT the) (JJ cellular) (NN level)))))) (VP (TO to) (VP (VB acclimatize) (PP (TO to) (NP (NP (NNS shifts)) (PP (IN in) (NP (NN temperature))))))))) (. .)))