( ( The ( priority impacts ) ) ( ( ( ( are ( to ( ( ( ( ( ( human health ) , ) ( materials ( , ( ( crops and ) ecosystems ) ) ) ) , ) and ) ( global warming ) ) ) ) and ) ( ( are mainly ) ( ( caused ( by ( atmospheric emissions ) ) ) ( from ( the ( power ( generation stage ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN priority) (NNS impacts)) (VP (VP (VBP are) (PP (TO to) (NP (NP (JJ human) (NN health)) (, ,) (NP (NNS materials) (, ,) (NNS crops) (CC and) (NNS ecosystems)) (, ,) (CC and) (NP (JJ global) (NN warming))))) (CC and) (VP (VBP are) (ADVP (RB mainly)) (VP (VBN caused) (PP (IN by) (NP (JJ atmospheric) (NNS emissions))) (PP (IN from) (NP (DT the) (NN power) (NN generation) (NN stage)))))) (. .)))
The priority impacts are to human health, materials, crops and ecosystems, and global warming and are mainly caused by atmospheric emissions from the power generation stage.
(ROOT (S (NP (NNP Human) (NNS beings)) (VP (VBP is/are) (NP (NP (DT the) (JJ main) (NN cause)) (PP (IN of) (NP (JJ recent) (JJ global) (NN warming))))) (. .)))
Human beings is/are the main cause of recent global warming.