( Niche ( ( ( An ( organism 's ) ) niche ) ( ( is ( ( ( its ( unique role ) ) or ) ( ( `` way ) ( of ( ( ( making ( a living ) ) '' ) ( in ( the environment ) ) ) ) ) ) ) . ) ) )
(ROOT (S (ADVP (RB Niche)) (NP (NP (DT An) (NN organism) (POS 's)) (NN niche)) (VP (VBZ is) (NP (NP (PRP$ its) (JJ unique) (NN role)) (CC or) (NP (NP (`` ``) (NN way)) (PP (IN of) (S (VP (VBG making) (NP (DT a) (NN living)) ('' '') (PP (IN in) (NP (DT the) (NN environment))))))))) (. .)))
Niche An organism's niche is its unique role  or &quot;way of making a living&quot; in the environment.
(ROOT (S (NP (DT Each) (NNS species)) (VP (VBZ has) (NP (NP (DT a) (JJ particular) (NN way)) (PP (IN of) (S (VP (VBG making) (NP (NP (DT a) (NN living)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (VP (VBN called) (NP (PRP$ its) (NN niche)))))))))))) (. .)))
Each species has a particular way of making a living, which is called its niche.