( ( Fungus ( and ( mold spores ) ) ) ( ( are ( in ( ( the air ) ( we breathe ) ) ) ) . ) )
(ROOT (S (NP (NNS Fungus) (CC and) (NN mold) (NNS spores)) (VP (VBP are) (PP (IN in) (NP (NP (DT the) (NN air)) (SBAR (S (NP (PRP we)) (VP (VB breathe))))))) (. .)))
Fungus and mold spores are in the air we breathe.
(ROOT (S (NP (NP (JJ Fungus-like) (NNS protists)) (PP (JJ such) (IN as) (NP (NN slime) (NNS molds)))) (VP (VB reproduce) (PP (IN with) (NP (NNS spores)))) (. .)))