( ( Most ( immediate ( environmental effects ) ) ) ( ( are ( ( ( physical effects ) , ) ( such ( as ( ( ( ( ( ( ( coating ( ( animals and ) plants ) ) ( with oil ) ) , ) ( ( suffocating ( aquatic organisms ) ) ( from ( oxygen depletion ) ) ) ) , ) and ) ( destroying ( ( ( food supply ) and ) habitats ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJS Most) (JJ immediate) (JJ environmental) (NNS effects)) (VP (VBP are) (NP (NP (JJ physical) (NNS effects)) (, ,) (PP (JJ such) (IN as) (S (VP (VP (VBG coating) (NP (NNS animals) (CC and) (NNS plants)) (PP (IN with) (NP (NN oil)))) (, ,) (VP (VBG suffocating) (NP (JJ aquatic) (NNS organisms)) (PP (IN from) (NP (NN oxygen) (NN depletion)))) (, ,) (CC and) (VP (VBG destroying) (NP (NP (NN food) (NN supply)) (CC and) (NP (NNS habitats))))))))) (. .)))
Most immediate environmental effects are physical effects, such as coating animals and plants with oil, suffocating aquatic organisms from oxygen depletion, and destroying food supply and habitats.
(ROOT (S (NP (NNS Plants)) (VP (CONJP (RB not) (JJ only)) (VP (VBP contribute) (NP (NN food))) (CC but) (VP (VBD oxygen) (PP (IN for) (NP (NNS organisms))))) (. .)))