( Biodiversity ( ( helps ( to ( insure ( ( survival ( of ( ( species and ) health ) ) ) ( of ecosystems ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Biodiversity)) (VP (VBZ helps) (S (VP (TO to) (VP (VB insure) (NP (NP (NN survival)) (PP (IN of) (NP (NN species) (CC and) (NN health))) (PP (IN of) (NP (NNS ecosystems)))))))) (. .)))
Biodiversity helps to insure survival of species and health of ecosystems.
(ROOT (S (NP (NNP Biodiversity)) (VP (VBZ helps) (VP (VB ensure) (SBAR (WHNP (WDT that)) (PRN (, ,) (ADVP (IN at) (JJS least)) (, ,)) (S (NP (DT some) (NNS species)) (VP (MD will) (VP (VB survive) (NP (JJ environmental) (NN change)))))))) (. .)))