( ( These ( apex predators ) ) ( ( play ( ( a ( pivotal role ) ) ( in ( ( the balance ) ( of ( the ecosystem ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT These) (NN apex) (NNS predators)) (VP (VBP play) (NP (NP (DT a) (JJ pivotal) (NN role)) (PP (IN in) (NP (NP (DT the) (NN balance)) (PP (IN of) (NP (DT the) (NN ecosystem))))))) (. .)))
These apex predators play a pivotal role in the balance of the ecosystem.
(ROOT (S (NP (NNP Beneficial) (NNS fungi)) (VP (VBP play) (NP (NP (DT a) (JJ crucial) (NN role)) (PP (IN in) (NP (NP (NN balance)) (PP (IN of) (NP (NNS ecosystems))))))) (. .)))
Beneficial fungi play a crucial role in balance of ecosystems.