( Snakes ( ( ( are ( ( beneficial and ) necessary ) ) ( for ( a ( balanced ecosystem ) ) ) ) . ) )
(ROOT (S (NP (NNS Snakes)) (VP (VBP are) (ADJP (JJ beneficial) (CC and) (JJ necessary)) (PP (IN for) (NP (DT a) (JJ balanced) (NN ecosystem)))) (. .)))
Snakes are beneficial and necessary for a balanced 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.