( ( Observing protists ) ( ( is ( fascinating ( because ( of ( ( ( the variety ) and ) ( ( the beauty ) ( of ( these organisms ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (VBG Observing) (NNS protists)) (VP (VBZ is) (ADJP (JJ fascinating) (PP (IN because) (PP (IN of) (NP (NP (DT the) (NN variety)) (CC and) (NP (NP (DT the) (NN beauty)) (PP (IN of) (NP (DT these) (NNS organisms))))))))) (. .)))
Observing protists is fascinating because of the variety and the beauty of these organisms.
(ROOT (S (NP (JJ Multiple) (NN fission)) (VP (VBZ is) (ADVP (RBR more) (RB often)) (VP (VBN observed) (PP (IN among) (NP (NNS protists))))) (. .)))