( All ( ( allergies ( due ( to ( ( ( ( ( ( ( ( ( foods , ) animals ) , ) chemicals ) , ) ( seasonal changes ) ) , ) and ) ( environmental elements ) ) ) ) ) . ) )
(ROOT (S (NP (DT All)) (VP (VBZ allergies) (ADJP (JJ due) (PP (TO to) (NP (NP (NNS foods)) (, ,) (NP (NNS animals)) (, ,) (NP (NNS chemicals)) (, ,) (NP (JJ seasonal) (NNS changes)) (, ,) (CC and) (NP (JJ environmental) (NNS elements)))))) (. .)))
All allergies due to foods, animals, chemicals, seasonal changes, and environmental elements.
(ROOT (S (NP (NP (DT A) (NN change)) (PP (IN of) (NP (NP (NN season)) (CC and) (NP (JJR less) (NN food))))) (ADVP (RB usually)) (VP (VB cause) (S (NP (JJ certain) (NNS animals)) (VP (TO to) (VP (VB migrate))))) (. .)))
A change of season and less food usually cause certain animals to migrate.