( ( Growing competition ) . )
(ROOT (NP (NP (VBG Growing)) (NP (NN competition)) (. .)))
Growing competition.
(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)) (. .)))