( ( Anthropogenic ( climate change ) ) ( ( refers ( to ( ( ( ( all ( climatic changeattributed ) ) ( to ( human activity ) ) ) , ) ( such ( as ( ( the ( climatic effects ) ) ( of ( ( the increase ) ( of ( ( certain ( greenhouse gases ) ) ( in ( the atmosphere ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Anthropogenic) (NN climate) (NN change)) (VP (VBZ refers) (PP (TO to) (NP (NP (DT all) (JJ climatic) (NN changeattributed)) (PP (TO to) (NP (JJ human) (NN activity))) (, ,) (PP (JJ such) (IN as) (NP (NP (DT the) (JJ climatic) (NNS effects)) (PP (IN of) (NP (NP (DT the) (NN increase)) (PP (IN of) (NP (NP (JJ certain) (NN greenhouse) (NNS gases)) (PP (IN in) (NP (DT the) (NN atmosphere)))))))))))) (. .)))
Anthropogenic climate change refers to all climatic changeattributed to human activity, such as the climatic effects of the increase of certain greenhouse gases in the atmosphere.
(ROOT (S (NP (NNP Human) (NNS actions)) (VP (VBZ has) (VP (VBN increased) (NP (DT the) (NN greenhouse) (NN effect)))) (. .)))