( ( ( ( Seed germination ) and ) ( seedling survival ) ) ( ( are ( dependent ( upon ( adequate ( moisture ( and ( soil temperature ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NN Seed) (NN germination)) (CC and) (NP (VBG seedling) (NN survival))) (VP (VBP are) (ADJP (JJ dependent) (PP (IN upon) (NP (JJ adequate) (NN moisture) (CC and) (NN soil) (NN temperature))))) (. .)))
Seed germination and seedling survival are dependent upon adequate moisture and soil temperature.
(ROOT (S (NP (NN Seed)) (ADVP (RB dormancy)) (VP (VBZ ensures) (SBAR (IN that) (S (NP (NNS seeds)) (VP (VBP germinate) (ADVP (RB only)) (SBAR (WHADVP (WRB when)) (S (NP (NP (NNS conditions)) (PP (IN for) (NP (JJ seedling) (NN survival)))) (VP (VBP are) (ADJP (JJ optimal))))))))) (. .)))