( ( ( The response ) ( of ( ( living things ) ( to ( a ( given contaminant ) ) ) ) ) ) ( often ( ( depends ( on ( ( the sensitivity ) ( of ( the ( individual organism ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NP (DT The) (NN response)) (PP (IN of) (S (VP (VBG living) (NP (NNS things)) (PP (TO to) (NP (DT a) (VBN given) (NN contaminant))))))) (ADVP (RB often)) (VP (VBZ depends) (PP (IN on) (NP (NP (DT the) (NN sensitivity)) (PP (IN of) (NP (DT the) (JJ individual) (NN organism)))))) (. .)))
The response of living things to a given contaminant often depends on the sensitivity of the individual organism.
(ROOT (S (NP (NNP Individual)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (DT an) (NN organism)) (, ,) (CC or) (NP (JJ single) (VBG living) (NN thing)))))) (. .)))