( Competition ( ( is growing ) -- ) )
(ROOT (S (NP (NN Competition)) (VP (VBZ is) (ADJP (VBG growing))) (: --)))
Competition is growing --
(ROOT (S (SBAR (IN As) (S (NP (DT the) (NN population)) (VP (VBZ grows)))) (, ,) (NP (NP (NN competition)) (PP (IN for) (NP (NN food)))) (VP (VBZ grows)) (. .)))